Chemical and Ionic Equilibrium 2 Question 16

16. HX is a weak acid (Ka=105). It forms a salt NaX(0.1M) on reacting with caustic soda. The degree of hydrolysis of NaX is

(2004,1M)

(a) 0.01

(b) 0.0001

(c) 0.1

(d) 0.5

Show Answer

Solution:

  1. Kh(X)=KwKa=1014105=109α=KhC=1090.10=104

hydrolysis =100α=0.01