(a) Interpretation: To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester. Concept introduction: For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

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Answer 1

Question

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

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CS2(g) →CS(g) + S(g) The rate law is Rate = k[CS2] where k = 1.6 × 10−6 s−¹. S What is the concentration of CS2 after 5 hours if the initial concentration is 0.25 M?

CS2(g) → CS(g) + S(g) The rate law is Rate = k [CS2] where k = 1.6 × 10-6 s−1. S Calculate the half-life.

Answer 2

Question

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

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Answer 3

Question

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

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Answer 4

Question

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

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Answer 5

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Answer 6

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Answer 7

Chapter 21, Problem 21.22P

Interpretation Introduction

(a)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Answer 8

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Answer 9

Interpretation Introduction

(b)

Interpretation:

To identify the appropriate base-solvent pair to accomplish a Claisen condensation with the ester.

Concept introduction:

For a Claisen condensation reaction, unwanted transesterification and saponification reactions can be avoided if the base that is added is the same as the alkoxide leaving group on the ester and if the alcohol solvent is the conjugate acid of that base.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 21 - Prob. 21.1P Ch. 21 - Prob. 21.2P Ch. 21 - Prob. 21.3P Ch. 21 - Prob. 21.4P Ch. 21 - Prob. 21.5P Ch. 21 - Prob. 21.6P Ch. 21 - Prob. 21.7P Ch. 21 - Prob. 21.8P Ch. 21 - Prob. 21.9P Ch. 21 - Prob. 21.10P

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Chapter 21 Solutions