The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed. Concept introduction: When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α , β − unsaturated aldehyde or ketone . An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 1

Question

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Identify and provide an explanation of the operational principles behind a Atomic Absorption Spectrometer (AAS). List the steps involved.

Instructions: Complete the questions in the space provided. Show all your work 1. You are trying to determine the rate law expression for a reaction that you are completing at 25°C. You measure the initial reaction rate and the starting concentrations of the reactions for 4 trials. BrO³¯ (aq) + 5Br¯ (aq) + 6H* (aq) → 3Br₂ (l) + 3H2O (l) Initial rate Trial [BrO3] [H*] [Br] (mol/L) (mol/L) | (mol/L) (mol/L.s) 1 0.10 0.10 0.10 8.0 2 0.20 0.10 0.10 16 3 0.10 0.20 0.10 16 4 0.10 0.10 0.20 32 a. Based on the above data what is the rate law expression? b. Solve for the value of k (make sure to include proper units) 2. The proposed reaction mechanism is as follows: i. ii. BrО¸¯ (aq) + H+ (aq) → HBrO3 (aq) HBrO³ (aq) + H* (aq) → H₂BrO3* (aq) iii. H₂BrO³* (aq) + Br¯ (aq) → Br₂O₂ (aq) + H2O (l) [Fast] [Medium] [Slow] iv. Br₂O₂ (aq) + 4H*(aq) + 4Br‍(aq) → 3Br₂ (l) + H2O (l) [Fast] Evaluate the validity of this proposed reaction. Justify your answer.

е. Д CH3 D*, D20

Answer 2

Question

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 3

Question

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 4

Question

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 5

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 6

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 7

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 10

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Answer 13

Ch. 22.2A - Prob. 22.2P Ch. 22.4 - Without looking back, propose a mechanism for the...Ch. 22.4 - Prob. 22.8P Ch. 22.4 - Prob. 22.9P Ch. 22.5A - Prob. 22.10P Ch. 22.5A - Prob. 22.11P Ch. 22.5B - Prob. 22.12P Ch. 22.5B - Predict the products of the following reactions....Ch. 22.5B - Which compounds will give positive iodoform tests?...Ch. 22.5C - Propose a mechanism for the acid-catalyzed...

Solution Summary: The author explains the mechanism for the given base-catalyzed aldol condensation with dehydration.

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Chapter 22 Solutions