Section-D: Comprehension Type
The experimental values of colligative properties of many solute in solution resemble to 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 properly causes for abnormal value of colligative properties: Two main causes.
(i) Dissociation of solute:
It increases the colligative proeprties
e.g.:Dissociation of KCl, NaCl etc. in water
(ii) Association of solute:
It decreases the colligative properties
e.g.:Dimerization of acetic acid in benzene
If degree of dissociation of an electrolyte A2B3 is 25% in a solvent, then