Question

Derive the Hydrolysis of weak acid - strong base [WA – SB] type salt.

Answer 1

Hydrolysis of [WA – SB] type salt – 

Ex: KCN, NaCN, K₂CO₃, BaCO₃, K₃PO₄ 

(1) In this type of salt hydrolysis anion reacts with water therefore called as anionic hydrolysis. 

(2) Solution is basic in nature as [OH^– ] increases.

(3) pH of the solution is greater than 7.

(a) Relation between K_h , K_w, K_a 

(b) Degree of hydrolysis :

(c) pH of the solution