Question

Assertion : pH of ammonium chloride solution is in basic range. Reason : Solution of a salt of weak base and strong acid is acidic.​

Answer 1

Answer:

Ammonium chloride is a neutral salt but its solution is slightly acidic because ammonium ion (NH4+) is a strong conjugate acid of a weak base ammonia and chloride ion (Cl−) is weak conjugate base of strong acid HCl .

Answer 2

Answer:

NH 4 Cl(aq)→NH 4(aq)+Cl(aq −

​

NH

4

+

​

 ions formed, undergo hydrolysis with water to form NH

4

​

OH and H

+

 ions. NH

4

​

OH is a weak base and thus remains almost unionised in solution. As a result, [H

+

] ions increase in solution, making the solution acidic.

Explanation: