Benzoic acid has higher molecular weight in benzene and lesser molecular weight in water because

Options

A. Water has lower freezing point and higher boiling point than benzene
B. It dissociates to a greater extent in benzene than in water
C. It associated in water and dissociates in benzene
D. It dissociates in water and associates in benzene

Answer

D

Explanation

In water benzoic acid dissociates to form benzoate ion whereas in benzene it associates to form a cyclic dimer held by two strong hydrogen bonds.