The aqueous solution of $FeCl_3$ is acidic in nature. This is due to:

In which of the following salts does hydrolysis take place?

The $pH$ of an aqueous solution of $CH_3COONH_4$ is found to be $6.7$ at $25\,^{\circ}C$. The concentration of the $CH_3COONH_4$ solution is ($K_a$ for $CH_3COOH = 1.0 \times 10^{-5}$ and $pK_b$ for $NH_4OH = 4.4$)

Calculate the degree of hydrolysis of a salt formed from $0.1 \ N$ $NH_4OH$ and $0.1 \ N$ $HCN$. Given $K_a = 10^{-5}$ and $K_b = 10^{-5}$.

Find the equilibrium constant for the equilibrium reaction:
$HCOO^{-} + H_2O \rightleftharpoons HCOOH + OH^{-}$
Given that the dissociation constant of formic acid is $K_a(HCOOH) = 1.8 \times 10^{-4}$.

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