Chapter 20, Problem 37A

(a)

Interpretation Introduction

Interpretation:

The name of aromatic compound is to be written.

Concept introduction:

The compounds which follow huckel rule of aromaticity are aromatic compounds.

These compounds are famous by common naming.

Answer to Problem 37A

1,2-Dimethylbenzene

Explanation of Solution

Two methyl groups are attached at 1,2 positions on benzene ring. So, its name is1,2-Dimethylbenzene. It is also known as ortho-dimethylbenzene

(b)

Interpretation Introduction

Interpretation:

The name of aromatic compound is to be written.

Concept introduction:

The compounds which follow huckel rule of aromaticity are aromatic compounds.

These compounds are famous by common naming.

Answer to Problem 37A

hexachlorobenzene

Explanation of Solution

Six chlorogroups are attached at all the six positions on benzene ring. So, its name ishexachlorobenzene.

(c)

Interpretation Introduction

Interpretation:

The name of aromatic compound is to be written.

Concept introduction:

The compounds which follow huckel rule of aromaticity are aromatic compounds.

These compounds are famous by common naming.

Answer to Problem 37A

Anthracene

Explanation of Solution

Three benzene rings are fused. So its name is Anthracene

(d)

Interpretation Introduction

Interpretation:

The name of aromatic compound is to be written.

Concept introduction:

The compounds which follow huckel rule of aromaticity are aromatic compounds.

These compounds are famous by common naming.

Answer to Problem 37A

3,5-Dichlorotoluene

Explanation of Solution

Two chlorine groups are attached at 3,5 positions on toluene ring. So, its name is3,5-Dichlorotoluene