Question

Predict whether van’t Hoff factor, (i) is less than one or greater than one in the following:
(i) CH3COOH dissolved in water.
(ii) CH3COOH dissolved in benzene. [Chennai 2019]

Answer 1

Explanation:

When acetic acid dissolves in water, it dissociates into CH

3

COO

−

and H

+

ions and thus the Van't Hoff factor is greater than 1.

(ii) Acetic acid dimerizes when dissolved in benzene and thus the Van't Hoff factor is less than 1.