Chapter 23, Problem 23.17QP

Interpretation Introduction

Interpretation:

The functional group should be identified for the PABA.

Concept introduction:

PABA or para-amino benzoic acid (also known as 4-Aminobenzoic acid)

If the compound is having oxygen atom it must be an alcohol $\left(\text{OH}\right)$, an aldehyde ( $\text{CHO}$), ketone ( $\text{CO}$) an acid ( $\text{COOH}$), amine ( ${\text{RNH}}_{\text{2}}$), an amide ( ${\text{CONH}}_{\text{2}}$), halogens ( $\text{F, Cl, Br, I}$) or ester ( $\text{RCOOR}$).

Example is given below

If any halogens are present in the molecule.

If the molecule is having hydroxyl group is called as an alcohol.

For example:

If the molecule is having ( $\text{COOH}$) group is called as acid.

For example:

If the molecule is having ( ${\text{CONH}}_{\text{2}}$) group is called as amide.

For example

If the molecule is having ( ${\text{NR}}_{\text{3}}$) group is called as amine.

For example

If the molecule is having ( $\text{RCOOR}$) group is called as ester.

Example

If the molecule is having ( $\text{RCHO}$) group is called as aldehyde.

Example

The given compound is ( $\text{CO}$) group is called as ketone.

Example