Dissolving $NaCN$ in de-ionised water will result in a solution having

The $pH$ of an aqueous solution of $MgCl_2$ is .......

Ionization constants for $CH_3COOH$ and $HCN$ are respectively $1.8 \times 10^{-5}$ and $7.2 \times 10^{-10}$. The degree of hydrolysis of $0.1 \ M \ KCN$ $(h_1)$ and $0.1 \ M \ CH_3COOK$ $(h_2)$ follows the order :

Which among the following salt solutions is basic in nature?

$A$ $0.02 \ M$ solution of pyridinium hydrochloride has $pH = 3.44$. Calculate the ionization constant of pyridine.

Which formula represents the degree of hydrolysis $(h)$ for ammonium benzoate $(C_6H_5COONH_4)$?