In hydrolysis,the compound is.....

The $pK_a$ of a weak acid,$HA,$ is $4.80.$ The $pK_b$ of a weak base,$BOH,$ is $4.78.$ The $pH$ of an aqueous solution of the corresponding salt,$BA,$ will be

Aqueous solution of ferric chloride is

On combining which of the following anions with $NH_4^{\oplus}$ will the $pH$ of the resulting salt solution be independent of the concentration?

Calculate the $pH$ on mixing $100 \ mL$ of $0.2 \ M \ HCN$ with $400 \ mL$ of $0.05 \ M \ KOH$ at $25 \ ^\circ C$ ($pK_b$ for $CN^- = 8$).

If the $K_b$ value in the hydrolysis reaction $B^{+} + H_2O \rightleftharpoons BOH + H^{+}$ is $1.0 \times 10^{-6}$,then the hydrolysis constant of the salt would be