Proton having greater chemical shift has to be identified. Concept Introduction: 1 H NMR spectroscopy: It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms. Chemical equivalence: The number of different kinds of protons in different electronic environments causes the number of signals in a 1 H NMR spectrum. If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal. Chemical shift values for protons in different electronic environment T y p e s o f p r o t o n s C h e m i c a l s h i f t M e t h y l ~0 .85 M e t h y l e n e ~1 .2 M e t h i n e ~1 .55 A l l y l i c ~2 A l k y n y l ~2 .5 R − O − C H 3 ~ 3.3 B r − C H 2 − H ~2 .5 − 4 C l − C H 2 − H ~ 3 − 4 V i n y l ~ 4.5 − 6.5 A r y l ~ 6.5 − 8 A l d e h y d e ~ 10 c a r b o x y l i c ~ 12

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Answer 1

Question

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

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order the following protons from lowest to highestchemical shift value.

The chemical environment of protons can be deduced from their chemical shifts. What are the relative chemical shifts of the protons at the labeled positions? [Protons that are highly shielded have low delta (chemical shift) values.] 1) b C The proton with the lowest delta value (the most shielded) is The proton with the highest delta value (the most deshielded) is 2) она The proton with the lowest delta value (the most shielded) is The proton with the highest delta value (the most deshielded) is Submit Answer Retry Entire Group 3 more group attempts remaining

Rank the labeled protons in order of increasing chemical shift.

Answer 2

Question

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

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Answer 3

Question

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

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Answer 4

Question

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

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Answer 5

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

Answer 6

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

Answer 7

Chapter 10.25, Problem 36P

(a)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

Answer 8

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

Answer 9

(b)

Interpretation Introduction

Interpretation:

Proton having greater chemical shift has to be identified.

Concept Introduction:

1H NMR spectroscopy:

It is the study of the interaction between electromagnetic radiation and the nuclei of hydrogen atoms and the hydrogen atoms.

Chemical equivalence:

The number of different kinds of protons in different electronic environments causes the number of signals in a 1H NMR spectrum.

If the protons are in identical electronic environments, then they are said to be chemically equivalent and they produce only one signal.

Chemical shift values for protons in different electronic environment

Types of protonsChemical shiftMethyl~0.85Methylene~1.2Methine~1.55Allylic~2Alkynyl~2.5R−O−CH3~3.3Br−CH2−H~2.5−4Cl−CH2−H~3−4Vinyl~4.5−6.5Aryl~6.5−8Aldehyde~10carboxylic~12

Answer 10

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Answer 11

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Answer 12

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Answer 13

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 the chemical equivalence of different kinds of protons in different electronic environments.

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