In this molecule four different functional groups are circled. Which is the carboxylic acid functional group?
A)I
B)II
C)III
D)IV

Question

In this molecule four different functional groups are circled.  Which is the carboxylic acid functional group?
A)I 
B)II 
C)III 
D)IV

Quizplus · Accepted Answer

The carboxylic acid functional group is characterized by a carbonyl group (C=O) and a hydroxyl group (OH) attached to the same carbon atom. This functional group is present in option III, which has a carboxylic acid group (-COOH) attached to a benzene ring.

In This Molecule Four Different Functional Groups Are Circled