Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled. Concept introduction: Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal. The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region. The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region. Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa. Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks. It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet. The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

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Answer 1

Question

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

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Answer 2

Question

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

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Answer 3

Question

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

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Answer 4

Question

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

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Check out a sample textbook solution

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Answer 5

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 6

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 7

Chapter 10, Problem 74P

(a)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 8

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 9

(b)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 10

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 11

(c)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 12

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 13

(d)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 14

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 15

(e)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 16

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 17

(f)

Interpretation Introduction

Interpretation:

Protons in the given compound that gives the signal at the lowest frequency ‘a’, at the next lowest ‘b’ and so on has to be labelled.

Concept introduction:

Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal.

The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.

The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.

Proton or set of proton attached near to the more electronegative or electron withdrawing atoms is more deshielded or less shielded and vice versa.

Signal multiplicity: In proton NMR spectrum, protons may or may not be split into one or more peaks.

It is referred as singlet, doublet, triplet, quartet, pentet, and multiplet.

The signal multiplicity is follow N+1 rule, where N is number of proton of adjacent carbon atom.

Answer 18

Expert Solution & Answer

Answer 19

Expert Solution & Answer

Answer 20

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Answer 21

Ch. 10.1 - Prob. 1P Ch. 10.2 - What would distinguish the mass spectrum of...Ch. 10.2 - Prob. 3P Ch. 10.3 - Prob. 5P Ch. 10.3 - Suggest possible molecular formulas for a compound...Ch. 10.3 - Prob. 7P Ch. 10.4 - Prob. 8P Ch. 10.4 - Prob. 9P Ch. 10.5 - Prob. 10P Ch. 10.5 - Prob. 11P

Solution Summary: The author explains that protons in the given compound that give the signal at the lowest frequency ‘a’, ‘b’ and so on have to be labelled.

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