Two solutions of non-volatile solutes A and B having molar mass ratio of A and B ( MA/MB ) as 1/3 are prepared by dissolving 5% (mass/vol.) of each in water. Calculate the ratio of freezing point depression. If the two solutions are mixed to prepare a new solution ( S1 ) by mixing in the ratio 2:3 by volume and another new solution ( S2 ) is obtained by mixing in the ratio 3:2, find out (ΔTf)S2(ΔTf)S1 . Assume density of solution A and B equal to one.