In Q2.20 IN YOUR SOLUTION YOU have calculated kf from cane sugar so how can you use same kf in glucose as we know that kf value differ.

In Q2.20 IN YOUR SOLUTION YOU have calculated kf from cane sugar so how can you use same kf in glucose as we know that kf value differ. 2.19 A solution containing 30 g of non-volatile salute vapour pressure of 2.8 kPa at 298 K Further. 18 g of water is then added the solution and the new vapour pressure becomes 2.9 kPa at 298 K. Calcu (i) molar mass of th e solute (ii) vapour pressure of water at 298 K. 2.20 A 5% solution (by mass) of cane sugar in water has freezing point of 271 Calculate the freezing point of 5% glucose in water if freezing point of -water 273.15 K. 2.21 IWo elements A and B form compounds having formula AB2 and AB dissolved in 20 g of benzene (COHE), 1 g of AB2 lowers the freezing point 2.3 K whereas 1.0 g of AB4 lowers it by 1.3 K. molar depression for benzene is 5.1 K kg morl. Calculate atomic masses of A and B. Stry