Chapter 22, Problem 55A

(a)

Interpretation Introduction

Interpretation − To draw the structural formula of given compound.

Introduction −

Structural formula is representation of molecule that shows arrangement of atoms and bonds.

Steps to draw the structural formula:

1. Analyse the type of hydrocarbon using suffix in name.
2. Prefixes indicate the type of substituents and the times of each substituent. The number indicate the position of substituent
3. Start with drawing all the carbon -carbon bonds.
4. Carbon hydrogen bonds are understood.
5. For benzene, six carbon ring is drawn with alternate double bonds in it ..

Explanation of Solution

The given compound is $1,4-diethylbenzene$ .

It has two same substituents ethyl at first and fourth carbon atom of benzene ring. Therefore, the structural formula can be:

  

(b)

Interpretation Introduction

Interpretation: To draw the structural formula of given compound.

Introduction −

Structural formula is representation of molecule that shows arrangement of atoms and bonds.

Steps to draw the structural formula:

1. Analyse the type of hydrocarbon using suffix in name.
2. Prefixes indicate the type of substituents and the times of each substituent. The number indicate the position of substituent
3. Start with drawing all the carbon -carbon bonds.
4. Carbon hydrogen bonds are understood.

Explanation of Solution

The given compound is $2-methyl-3-phenylpentane$

It has two substituents, methyl at second carbon atom and phenyl group at third carbon atom. It is an alkane with the parent chain of five carbon atoms.

Therefore, the structural formula can be:

  

(c)

Interpretation Introduction

Interpretation- To draw the structural formula of given compound.

Introduction −

Structural formula is representation of molecule that shows arrangement of atoms and bonds.

Steps to draw the structural formula:

1. Analyse the type of hydrocarbon using suffix in name.
2. Prefixes indicate the type of substituents and the times of each substituent. The number indicate the position of substituent
3. Start with drawing all the carbon -carbon bonds.
4. Carbon hydrogen bonds are understood.
5. For benzene, six carbon ring is drawn with alternate double bonds in it ..

Explanation of Solution

The given compound is $1,3-dimethylbenzene$

It has two same substituents, methyl at first and third carbon atom of benzene ring.

The structural formula can be: