The correct relationship between the hydrolysis constant $(K_h)$ and the dissociation constant $(K_b)$ for $MgCl_2$ is:

The $pH$ for anionic hydrolysis is given by:

$A$ few grams of sodium carbonate $(Na_2CO_3)$ is added to $1 \ L$ of water. What is the $pH$ or $pH$ range of the resultant solution?

Do you expect different products in solution when aluminium $(III)$ chloride and potassium chloride are treated separately with $(i)$ normal water,$(ii)$ acidified water,and $(iii)$ alkaline water? Write equations wherever necessary.

Calculate $[H^{+}]$ at the equivalence point during the titration of $25 \ mL$ of $0.1 \ M$ weak acid $HA$ $(K_a = 10^{-5})$ with $0.05 \ M \ NaOH$ solution.

Find out $K_a$ for the acid when the degree of hydrolysis of $0.1 \ M \ CH_3COONa$ is $1 \ \%$.