question_answer

Carboxylic acid group does not give the usual addition and elimination reactions of aldehydes and ketones because

A) \[O-H\] bond is more polar than  group

B) carboxylate ion gets ionized

C) carboxylate ion gets stabilised by resonance

D) it exists as \[-COOH\] and there is no carbonyl group

Correct Answer: C

Solution :

[c] Due to resonance in carboxylate ion, the double bond character of \[C=O\] bond in carboxylic acids is greatly reduced as compared to that in aldehydes and ketones.