Question

Arrange the Following compounds in increasing order of Acidity.
I3CCOOH Ph-OH CH3CH2COOH F3CCOOH HCOH​

Answer 1

Answer:

The following compounds are given:

a) CH

3

COOH

b) CH

3

OCH

2

COOH

c) CF

3

COOH

The acidic strength of acetic acid is lower than that of 2-methoxy acetic acid as the methoxy group is an electron withdrawing group and stabilizes the carboxylate anion.

The acid strength of 2-methoxyacetic acid is lower than that of trifluoroacetic acid as the methoxy group has less electron withdrawing power than trifluoromethyl group.

Hence, the correct order of increasing acid strength is a<b<c