An aqueous solution of potassium formate is ...........

Which salt from the following forms an aqueous solution having $pH$ less than $7$?

The $pK_{a}$ of acetic acid and $pK_{b}$ of ammonium hydroxide are $4.76$ and $4.75$ respectively. Calculate the $pH$ of ammonium acetate solution.

The $pK_{a}$ of a weak acid $HA$ is $4.80$ and the $pK_{b}$ of a weak base $BOH$ is $4.78$. What is the $pH$ of an aqueous solution of the salt $BA$?

The $pH$ of an aqueous solution of $CH_3COONa$ of concentration $C \ M$ is given by:

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