Chapter 21, Problem 56A

Interpretation Introduction

Interpretation:

The structural formula of heptane needs to be drawn.

Concept introduction:

The hydrocarbon compounds that contains single bond(s) between carbon atom(s) are said to be saturated hydrocarbon. Hydrocarbon compounds containing single bonds only are said to be alkane.

Answer to Problem 56A

Explanation of Solution

Alkanes are compounds containing carbon and hydrogen atoms having single bond(s) between carbon atom(s) in the structure. For number of carbons atoms in alkane chain, the prefix is given as:

Carbon-1   meth

Carbon-2   eth

Carbon-3   prop    

Carbon-4   but      

Carbon-5   pent

Carbon-6   hex

Carbon-7   hept

Carbon-8   oct

Carbon-9   non     

Carbon-10       dec

The given name is heptane that means the parent chain has 7 number of carbons in the chain and there is no substituent in the chain. So, the structural formula of heptane is:

Interpretation Introduction

Interpretation:

The structural formula of 2-methylhexane needs to be drawn.

Concept introduction:

The hydrocarbon compounds that contains single bond(s) between carbon atom(s) are said to be saturated hydrocarbon. Hydrocarbon compounds containing single bonds only are said to be alkane.

Answer to Problem 56A

Explanation of Solution

The given name is 2-methylhexane that means the parent chain has 6 number of carbons in straight chain and a methyl substituent at position 2 in the chain. So, the structural formula of 2-methylhexane is:

Interpretation Introduction

Interpretation:

The structural formula of 2, 3-dimethylpentane needs to be drawn.

Concept introduction:

The hydrocarbon compounds that contains single bond(s) between carbon atom(s) are said to be saturated hydrocarbon. Hydrocarbon compounds containing single bonds only are said to be alkane.

Answer to Problem 56A

Explanation of Solution

The given name is 2, 3-dimethylpentane that means the parent chain has 5 number of carbons in straight chain and two methyl substituents at position 2 and 3 in the chain. So, the structural formula of 2, 3-dimethylpentane is:

Interpretation Introduction

Interpretation:

The structural formula of 2, 2-dimethylpropane needs to be drawn.

Concept introduction:

The hydrocarbon compounds that contains single bond(s) between carbon atom(s) are said to be saturated hydrocarbon. Hydrocarbon compounds containing single bonds only are said to be alkane.

Answer to Problem 56A

Explanation of Solution

The given name is 2, 2-dimethylpropane that means the parent chain has 3 number of carbons in straight chain and two methyl substituents at position 2 in the chain. So, the structural formula of 2, 2-dimethylpropane is: