Question

(i) Calculate the freezing point of solution when 1.9 g of MgCl₂ (M = 95 g mol^-1) was dissolved in 50 g of water, assuming MgCl₂ undergoes complete ionization. (K_f for water = 1.86 K kg mol^-1)

(ii) (a) Out of 1 M glucose and 2 M glucose, which one has a higher boiling point and why? 

(b) What happens when the external pressure applied becomes more than the osmotic pressure of solution ?

Answer 1

(i)

(ii) (a) 2 M glucose has a higher boiling point because higher the number of particles lesser is the vapour pressure.

(b) Reverse osmosis.