Chapter 22, Problem 18RQ

How are amides and carboxylic acids related to each other? How are they different from each other?

To determine

The similarity and difference between an amide and a carboxylic acid.

Answer to Problem 18RQ

The amide and a carboxylic acid both carry a carbonyl group. The carbonyl group gets attached to the nitrogen atom in an amide while in carboxylic acid it is attached to one hydroxy group.

Explanation of Solution

The amide and a carboxylic acid both possess a carbonyl group. The carbonyl group is made of carbon and oxygen atom.

The amide group contains the formula $\left({\text{CONH}}_{\text{2}}\right)$ , In amides, the carbonyl carbon gets attached with nitrogen atom.Whereas carboxylic acid group contains formula $\left(-\text{COOH}\right)$ , in a carboxylic acid the carbonyl carbon gets attached to a hydroxy group.

Conclusion:

Therefore, amide and a carboxylic acid both carry a carbonyl group. The carbonyl group gets attached to the nitrogen atom in an amide while in carboxylic acid it is attached to one hydroxy group.