(a) Interpretation: On the basis of 13 C NMR, the compounds α , α − dimethylsuccinic acid and adipic acid are to be differentiated. Concept introduction: Carboxylic acid is a class of organic compound that contains a − COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix − o i c a c i d or − i c a c i d . The 13 C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13 C nucleus. The natural abundance of 13 C nucleus is only 1.1 % while 12 C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The ( n + 1 ) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

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Answer 1

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Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

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MISSED THIS? Read Section 19.9 (Pages 878-881); Watch IWE 19.10 Consider the following reaction: CH3OH(g) CO(g) + 2H2(g) (Note that AG,CH3OH(g) = -162.3 kJ/mol and AG,co(g)=-137.2 kJ/mol.) Part A Calculate AG for this reaction at 25 °C under the following conditions: PCH₂OH Pco PH2 0.815 atm = 0.140 atm 0.170 atm Express your answer in kilojoules to three significant figures. Ο ΑΣΦ AG = -150 Submit Previous Answers Request Answer □? kJ × Incorrect; Try Again; 2 attempts remaining Calculate the free energy change under nonstandard conditions (AGrxn) by using the following relationship: AGrxn = AGrxn + RTInQ, AGxn+RTInQ, where AGxn is the standard free energy change, R is the ideal gas constant, T is the temperature in kelvins, a is the reaction quotient. Provide Feedback Next >

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Answer 2

Question

Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

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Answer 3

Question

Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

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Answer 4

Question

Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

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Answer 5

Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

Answer 6

Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Answer 7

Chapter 20, Problem 20.6P

Interpretation Introduction

(a)

Interpretation:

On the basis of 13C NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound that contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. The 13C NMR spectroscopy is similar kind of spectroscopy the only difference is that it is used to detect the presence of 13C nucleus. The natural abundance of 13C nucleus is only 1.1 % while 12C nucleus is not detectable by NMR spectroscopy. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The (n+1) rule is applicable on the protons attached to the same carbon whose splitting pattern is to be determined.

Answer 8

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

Answer 9

Interpretation Introduction

(b)

Interpretation:

On the basis of proton NMR, the compounds α,α−dimethylsuccinic acid and adipic acid are to be differentiated.

Concept introduction:

Carboxylic acid is a class of organic compound contains a −COOH group attached with a hydrocarbon chain. The name of these compounds ends with a suffix −oic acid or −ic acid. In proton 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. The (n+1) rule is applicable on the protons attached to the adjacent carbon whose splitting pattern is to be determined.

Answer 10

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Answer 13

Ch. 20 - Prob. 20.1P Ch. 20 - Prob. 20.2P Ch. 20 - Prob. 20.3P Ch. 20 - Prob. 20.4P Ch. 20 - Prob. 20.5P Ch. 20 - Prob. 20.6P Ch. 20 - Prob. 20.7P Ch. 20 - Prob. 20.8P Ch. 20 - Prob. 20.9P Ch. 20 - Prob. 20.10P

Solution Summary: The author explains the structure of carboxylic acid and adipic acid on the basis of 13C NMR spectra.

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Chapter 20 Solutions