112) A 0.2M aqueous solution of a weak acid (HX) is 50% ionized. The freezing point of this solution is: (K_f = 1.86 kg⁄mol for water)

113) 1.82m metal required 32.5 mL of 1N HCl to dissolve it. What is the equivalent weight for metal?

114) Calculate the amount of oxalic acid (H₂C₂O₄.2H₂O) required to obtain 250 mL of semimolar solution:

115) The vapour pressure of a pure liquid A at 310^oC is 120 torr. The vapour pressure of this liquid in solution with liquid B is 72 torr. Calculate the mole fraction of A in solution, if the mixture obeys Raoult′s law:

116) If latent heat of fusion of ice is 80 cal⁄gm at 0^oC, calculate molal depression constant for water: