(a) Interpretation: Enantiomeric excess of the given solution is to be calculated. Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

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Answer 1

Question

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

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Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electrons-pushing arrows for the following reaction or mechanistic step(s).

Answer 2

Question

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

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Answer 3

Question

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

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Answer 4

Question

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

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Answer 5

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 6

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 7

Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 8

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 9

Interpretation Introduction

(b)

Interpretation: The percent of each enantiomer in the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 10

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Answer 11

Interpretation Introduction

(c)

Interpretation: The specific rotation [α] for the enantiomer of quinine is to be predicted.

Concept introduction: Enantiomers are stereoisomers, which are non-superimposable images of each other. They have identical physical and chemical properties in symmetric environment. They rotate the plane-polarized light in equal amounts and in opposite directions.

Answer 12

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 13

Interpretation Introduction

(d)

Interpretation: Enantiomeric excess of the given solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 14

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 15

Interpretation Introduction

(e)

Interpretation: The [α] value for the solution is to be calculated.

Concept introduction: Enantiomeric excess is the excess of major enantiomer over the minor enantiomer. Enantiomeric excess is equivalent to the optical purity. Enantiomeric excess is the fraction of observed rotation of the mixture to specific rotation of the pure enantiomer.

Answer 16

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Answer 17

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Answer 18

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Answer 19

Ch. 5.1 - Prob. 1P Ch. 5.2 - Prob. 2P Ch. 5.3 - Draw the mirror image of each compound. Label each...Ch. 5.3 - Prob. 4P Ch. 5.3 - A molecule is achiral if it has a plane of...Ch. 5.6 - Prob. 17P Ch. 5.6 - Prob. 18P Ch. 5.7 - Prob. 19P Ch. 5.7 - Prob. 20P Ch. 5.7 - Problem 5.18 Compounds E and F are two isomers of...

Solution Summary: The author explains that the enantiomeric excess of the given solution is equivalent to the optical purity.

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Chapter 5 Solutions