The number of hydroxide ions,produced by one molecule of sodium carbonate $(Na_2CO_3)$ on hydrolysis is

$NaCl$ does not undergo hydrolysis because......

The dissociation constants of $CH_3COOH$ and $HCN$ are $1.8 \times 10^{-5}$ and $7.2 \times 10^{-10}$ respectively. What is the relationship between the degree of hydrolysis of $KCN$ $(x_1)$ and $CH_3COOK$ $(x_2)$?

Calculate the hydrolysis constant $(K_h)$ for a salt containing $NO_2^-$. Given that the dissociation constant $(K_a)$ for $HNO_2$ is $4.5 \times 10^{-4}$ and the ionic product of water $(K_w)$ is $1.0 \times 10^{-14}$.

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

The hydrolysis constant of $0.01 \ M$ methylamine hydrochloride is....... [ Given: $K_b = 5 \times 10^{-4} $ ]