Chapter 3, Problem 20P

(a) $\text{H}$

Interpretation Introduction

Interpretation:The number of constitutional isomeric monohalogenated products that can form from butane should be determined.

Concept introduction: The carbon linked to one alkyl/carbon while other three are termed primary carbon. Thus, hydrogen linked to such carbon is referred as primary.

The carbon linked to two alkyl/carbons and two $\text{H}$ is termed secondary carbon. Thus, hydrogen linked to such carbon is referred as secondary.

The carbon linked to three alkyl groups/carbons and one $\text{H}$ is termed tertiary carbon. Thus, hydrogen linked to such carbon is referred as tertiary.

(b)

Interpretation Introduction

Interpretation:The number of constitutional isomeric monohalogenated products that can form from pentane should be determined.

Concept introduction:The carbon linked to one alkyl/carbon while other three $\text{H}$ are termed primary carbon. Thus, hydrogen linked to such carbon is referred as primary.

The carbon linked to two alkyl/carbons and two $\text{H}$ is termed secondary carbon. Thus, hydrogen linked to such carbon is referred as secondary.

The carbon linked to three alkyl groups/carbons and one $\text{H}$ is termed tertiary carbon. Thus, hydrogen linked to such carbon is referred as tertiary.

(c)

Interpretation Introduction

Interpretation:The number of constitutional isomeric monohalogenated products that can form from $3-\text{methylpentane}$ should be determined.

Concept introduction:The carbon linked to one alkyl/carbon while other three $\text{H}$ are termed primary carbon. Thus, hydrogen linked to such carbon is referred as primary.

The carbon linked to two alkyl/carbons and two $\text{H}$ is termed secondary carbon. Thus, hydrogen linked to such carbon is referred as secondary.

The carbon linked to three alkyl groups/carbons and one $\text{H}$ is termed tertiary carbon. Thus, hydrogen linked to such carbon is referred as tertiary.

(d)

Interpretation Introduction

Interpretation:The number of constitutional isomeric monohalogenated products that can form from $1-\text{methylcyclopentane}$ should be determined.

Concept introduction: The carbon linked to one alkyl / carbon while other two $\text{H}$ are termed primary carbon. Thus, hydrogen linked to such carbon is referred as primary.

The carbon linked to two alkyl /carbons and one $\text{H}$ is termed secondary carbon. Thus, hydrogen linked to such carbon is referred as secondary.

The carbon linked to three alkyl groups/carbons and no $\text{H}$ is termed tertiary carbon. Thus, hydrogen linked to such carbon is referred as tertiary.