The total number of carboxylic acid groups in the product P is

Question

The total number of carboxylic acid groups in the product P is (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

PLAN Reactant is cyclic anhydride and changes to dicarboxylic acid on hydrolysis.
Also there is decarboxylation on heating if there is keto group w.r.t

- COO H

group. Ozonolysis cleaves

(C = C)

bond and

H_{2} O_{2}

oxidises

- C H O

to

- COO H

group.
Thus, number of

- COO H

groups in

P = 2

.

Q. The total number of carboxylic acid groups in the product P is

PLAN Reactant is cyclic anhydride and changes to dicarboxylic acid on hydrolysis. Also there is decarboxylation on heating if there is keto group w.r.t −COOH group. Ozonolysis cleaves (C=C) bond and H2​O2​ oxidises −CHO to −COOH group. Thus, number of −COOH groups in P=2.

Q. The total number of carboxylic acid groups in the product $P$ is