Chapter 9, Problem 64AP

a)

Interpretation Introduction

Interpretation:

Mention the isomer with a lower boiling point between hexane and 2, 3-dimethylbutane

Concept Introduction:

Hexane can be defined as the alkane which has six carbon atoms.

Chemical formula -

Characteristics of hexane are:

• Colorless liquid
• In pure form, it is odourless
Hexane is one of the constituents of gasoline.
One of the isomer of hexane is 2, 3-dimethylbutane.

Chemical formula -

Characteristics of 2, 3-dimethylbutaneare:

• Colorless liquid
• Water insoluble
• It has a petroleum like odour

b)

Interpretation Introduction

Interpretation:

Mention the isomer with a lower boiling point between pentane and 2, 2-dimethylpropane

Concept Introduction:

Pentane can be defined as the alkane which has five carbon atoms.

Chemical formula -

Characteristics of pentane are:

Colorless liquid

Water insoluble

It has petroleum like odor

2, 2-dimethylpropane can be defined as the alkane having double-chained-branch with five carbon atoms.

c)

Interpretation Introduction

Interpretation:

Mention the isomer with a lower boiling point between heptane and 2, 4-dimethylpentane

Concept Introduction:

Heptane can be defined as the alkane which is straight-chain.

Chemical formula -

Characteristics of heptane are:

• Colorless liquid
• Water insoluble
• It has petroleum like odour

2, 4-dimethylpentane can be defined as the alkane having chemical formula

d)

Interpretation Introduction

Interpretation:

Mention the isomer with a lower boiling point between octane and 2, 2, 4-trimethylpentane

Concept Introduction:

Octane can be defined as the alkane and the hydrocarbon.

Chemical formula -

Characteristics of octane are:

• Volatile
• Very flammable

2, 2, 4-trimethylpentanecan be defined as the organic compound having chemical formula