Question
On dissolving 0.5   g of a non-volatile non-ionic solute to 39   g of benzene, its vapor pressure decreases from 650   m m   H g to 640   m m   H g . The depression of freezing point of benzene (in K ) upon addition of the solute is _______ (Given data: Molar mass and the molal freezing point depression constant of benzene are 78   g   m o l - 1 and 5.12   K   k g   m o l - 1 , respectively)