The freezing point of a solution containing 0.2 g of acetic acid in 20.0 g benzene is…

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

The freezing point of a solution containing 0.2 g of acetic acid in 20.0 g benzene is lowered by

0.45^\circ\text{C}

. Calculate the degree of association of acetic acid in benzene. Assume acetic acid dimerizes in benzene.

K_f

for benzene =

5.12 \text{ K mol}^{-1} \text{ kg}

. (Roorkhee 1994)