Compreshension -I
The experimental values of colligative properties of many solutes in solution resembles calculated value of colligative properties.
However in same cases, the experimental value of colligative property differ widely than those obtained by calculation. Such experimental values of colligative properties are known as Abnormal values of colligative properties are :
(i) Dissociation of solute : It increases the colligative properties.
(ii) Association of solute : It decreases the colligative properties
e.g. : Dimerisation of acetic acid in benzene
One mole `I_(2)` (solid) is added in 1 M, 1 litre Kl solution . Then

Options

A. Osmostic pressure of solution increases
B. Freezing point of solution increases
C. Relative lowering in vapour pressure decreases
D. No change in boiling point of solution

Answer

4