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

(i) When acetic acid dissolves in water, it dissociates into CH3COO⁻ 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.