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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

Answer»

Osmostic pressure of solution increases
FREEZING point of solution increases
Relative lowering in vapour pressure decreases
No CHANGE in BOILING point of solution

Answer :4


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