Q. Relation between hydrolysis constant and dissociation constant are given. Which is the correct formula for $MgCl_{2}$?
A) $K_{h} = \frac{K_{w}}{K_{a}}$
B) $K_{h} = \frac{K_{w}}{K_{b}}$
C) $K_{h} = \frac{K_{w}}{K_{a} \times K_{b}}$
D) $K_{w} = \frac{K_{h}}{K_{b}}$
Explanation
(b)
For a salt of weak base and strong acid like $MgCl_{2}$ the relation is as
$K_{h} = \frac{K_{w}}{K_{b}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.