The reason as to why the 1 H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated. Concept introduction: Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Question

Want to see the full answer?

Answer 1

Question

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Complete the mechanism for the E1 reaction below by following the directions written above each of the five boxes. Be sure to include lone pair electrons and nonzero formal charges. 2nd attempt 1 Provide the missing curved arrow notation. E+ RUDDA 1st attempt Feedback See Periodic Table See Hint Iir See Periodic Table See Hint

Heating an alcohol in the presence of sulfuric or phosphoric acid will cause a dehydration to occur: the removal of the elements of water from a molecule, forming an alkene. The reaction usually follows an E1 mechanism. The SN1 pathway is suppressed by using a strong acid whose conjugate base is a poor nucleophile. Further, heating the reaction mixture causes a greater increase in the rate of E1 compared to the rate of Sy1. 3rd attempt h Draw curved arrow(s) to show how the alcohol reacts with phosphoric acid. TH © 1 0 0 +1% # 2nd attempt Feedback H Ju See Periodic Table See Hint H Jud See Periodic Table See Hint

Part 2 (0.5 point) 0- Draw the major organic product with the correct geometry. 10 1: 70000 х く 1st attempt Part 1 (0.5 point) Feedback Please draw all four bonds at chiral centers. P See Periodic Table See Hint

Answer 2

Question

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Answer 6

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer 7

Chapter 12, Problem 12B.9P

(a)

Interpretation Introduction

Interpretation:

The reason as to why the 1H NMR spectrum of cyclohexane shows a single peak at room temperature but shows two peaks when the temperature is lowered is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. Tetramethylsilane (TMS) is taken as reference.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Answer 9

(b)

Interpretation Introduction

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Answer 10

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Answer 11

(c)

Interpretation Introduction

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 15

Ch. 12 - Prob. 12B.1ST Ch. 12 - Prob. 12B.2ST Ch. 12 - Prob. 12B.3ST Ch. 12 - Prob. 12D.1ST Ch. 12 - Prob. 12A.1DQ Ch. 12 - Prob. 12A.2DQ Ch. 12 - Prob. 12A.3DQ Ch. 12 - Prob. 12A.1AE Ch. 12 - Prob. 12A.1BE Ch. 12 - Prob. 12A.2AE

Interpretation: The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated. Concept introduction: Same as metioned in concept introduction in part (a).

Interpretation: The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated. Concept introduction: Same as metioned in concept introduction in part (a).

Want to see the full answer?

Chapter 12 Solutions

Interpretation:

The reason as to why the 19F NMR spectrum of PF5 shows two lines even at the lowest experimentally accessible temperature has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).

Interpretation:

The reason as to why the triplet and quartet obtained in the 1H NMR spectrum of ethanol shows additional splitting if water is excluded from the sample has to be stated.

Concept introduction:

Same as metioned in concept introduction in part (a).