The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified. Concept Introduction: > The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride ( PCl 3 ) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction. > A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

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Answer 1

Question

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

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Answer 2

Question

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

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Answer 3

Question

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

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Answer 4

Question

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

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Answer 5

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

Answer 6

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

Answer 7

Chapter 21.1, Problem 5P

Interpretation Introduction

Interpretation:

The structure of valine is to be stated. The rotation of valine that is prepared by halogenation of 3- methylbutanoic acid is to be identified.

Concept Introduction:
>
The carboxylic acids that contain α- hydrogen atoms in their structure on reaction with halogen in the presence of phosphorous trichloride (PCl3) results in the formation of α- halo carboxylic acids as the final products. Such a reaction is called as Hell-Volhard-Zelinsky reaction.
>
A mixture that has equal amount of enantiomers is commonly known as racemic mixture. Enantiomers have non-superimposable mirror images of one another and therefore; they rotate the plane of polarized light in opposite but equal direction. The racemic mixture is optically inactive in nature.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 21.1 - Prob. 1P Ch. 21.1 - Prob. 2P Ch. 21.1 - Prob. 3P Ch. 21.1 - Prob. 4P Ch. 21.1 - Prob. 5P Ch. 21.2 - Prob. 6P Ch. 21.2 - Prob. 7P Ch. 21.2 - Prob. 8P Ch. 21.3 - Prob. 9P Ch. 21.3 - Prob. 10P

Solution Summary: The author explains the structure of valine, which is formed by halogenation of 3- methylbutanoic acid.

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Chapter 21 Solutions