Question

The degree of dissociation of Ammonium hydroxide increases in the presence of Ammonium Chloride because of ______________

(a) solubility product

(b) common Ion effect

(c) hydrolysis of the salt

(d) mixed salts

The question was posed to me by my college professor while I was bunking the class.

This intriguing question comes from Solubility Equilibria of Sparingly Soluble Salts in division Equilibrium of Chemistry – Class 11

Answer 1

Right choice is (c) hydrolysis of the salt

Explanation: Common Ion effect is defined as the separation of the dissociation of a weak electrolyte by the addition of a strong electrolyte having some common ion. Therefore the degree of dissociation of Ammonium hydroxide decreases in the presence of Ammonium Chloride due to common Ion effect.