The freezing point of a solution containing 0.2g of acetic acid in 20.0 g benzene is lowered by 0.45ºC. Calculate the degree of association of acetic acid in benzene. Assume acetic acid dimerizes in benzene. Kf for benzene = 5.12 K mol–1 kg.
(A) 49.5 %
(B) 94.5%
(C) 85.5%
(D) 58.5%
