Question
An ideal solution was prepared by dissolving some amount of cane sugar ( non-volatile) in 0.9 moles of water. The solution was then cooled just below its freezing temperature (271 K) where some ice get seperated out. The remaining aqueous solution registered a vapour pressure of 700 torr at 373 K. Calculate the mass of ice seperated out, if the molar heat of fusion of water is 6 kJ. Kf=1.86 K kg mol−1