a) Interpretation: Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained. Concept introduction: Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic. To state and explain: Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

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Answer 1

Question

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

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(c) The following data have been obtained for the hydrolysis of sucrose, C12H22O11, to glucose, C6H12O6, and fructose C6H12O6, in acidic solution: C12H22O11 + H2O → C6H12O6 + C6H12O6 [sucrose]/mol dm³ t/min 0 0.316 14 0.300 39 0.274 60 0.256 80 0.238 110 0.211 (i) Graphically prove the order of the reaction and determine the rate constant of the reaction. (ii) Determine the half-life, t½ for the hydrolysis of sucrose.

(III) adsorbent (b) Adsorption of the hexacyanoferrate (III) ion, [Fe(CN)6] ³, on y-Al2O3 from aqueous solution was examined. The adsorption was modelled using a modified Langmuir isotherm, yielding the following values of Kat pH = 6.5: (ii) T/K 10-10 K 280 2.505 295 1.819 310 1.364 325 1.050 Determine the enthalpy of adsorption, AadsHⓇ. If the reported value of entropy of adsorption, Aads Se = 146 J K-1 mol-1 under the above conditions, determine Aads Gº.

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Answer 2

Question

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

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Answer 3

Question

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

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Answer 4

Question

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

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Answer 5

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Answer 6

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Answer 7

Chapter 20.SE, Problem 18VC

Interpretation Introduction

a)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Answer 8

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Answer 9

Interpretation Introduction

b)

Interpretation:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid is to be stated and explained.

Concept introduction:

Electron releasing substituents, if present, in the benzene ring destabilize the carboxylate anion and makes the compound less acidic. On the other hand, electron withdrawing substituents, if present, in the benzene ring stabilize the carboxylate anion and makes the compound more acidic.

To state and explain:

Whether the carboxylic acid represented by the model is more acidic or less acidic than benzoic acid.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 20.1 - Give IUPAC names for the following compounds:Ch. 20.1 - Draw structures corresponding to the following...Ch. 20.2 - Prob. 3P Ch. 20.2 - The Ka for dichloroacetic acid is 3.32 Ă— 10-2....Ch. 20.3 - Calculate the percentages of dissociated and...Ch. 20.4 - Which would you expect to be a stronger acid, the...Ch. 20.4 - Dicarboxylic acids have two dissociation...Ch. 20.4 - The pKa of p-cyclopropylbenzoic acid is 4.45. Is...Ch. 20.4 - Prob. 9P Ch. 20.5 - Prob. 10P

Solution Summary: The author states that the carboxylic acid represented by the model is p-bromobenzoic acid.

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