
Concept explainers
(a)
Interpretation:
The structural formula of the compound is to be written.
Concept introduction:
To write the structural formula,
(a)

Answer to Problem 55A
Explanation of Solution
The root name ‘pentan’ shows five carbon atoms in the main chain which are single bonded.
The name indicates one methyl group is attached at C-3 and C-1 is carboxylic group (
(b)
Interpretation:
The structural formula of the compound is to be written.
Concept introduction:
To write the structural formula, functional group, number of carbon atoms in the chain is to be identified.
(b)

Answer to Problem 55A
Explanation of Solution
The name ethyl methanoate shows compound contains ester functional group.
Its general formula is
The esters are name by taking alkyl chain from alcoholic part as substituent. Then name of parent chain of
(c)
Interpretation:
The structural formula of the compound is to be written.
Concept introduction:
To write the structural formula, functional group, number of carbon atoms in the chain is to be identified.
(c)

Answer to Problem 55A
Explanation of Solution
The name Methyl benzoate shows compound contains ester functional group.
Its general formula is
The esters are name by taking alkyl chain from alcoholic part as substituent. Then name of parent chain of carboxylic acid is written by removing ‘e’ and adding ‘oate’. So the structure of Methyl benzoate is
(d)
Interpretation:
The structural formula of the compound is to be written.
Concept introduction:
To write the structural formula, functional group, number of carbon atoms in the chain is to be identified.
(d)

Answer to Problem 55A
Explanation of Solution
The root name ‘butan’ shows four carbon atoms in the main chain which are single bonded.
The name indicates one bromo group is attached at C-2 and C-1 is carboxylic group (
(e)
Interpretation:
The structural formula of the compound is to be written.
Concept introduction:
To write the structural formula, functional group, number of carbon atoms in the chain is to be identified.
(e)

Answer to Problem 55A
Explanation of Solution
The root name ‘hexan’ shows six carbon atoms in the main chain which are single bonded.
The name indicates two methyl groups are attached, one at C-2 and other at C-4 and one chloro is attached at C-3 and C-1 is carboxylic group (
Chapter 20 Solutions
World of Chemistry
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