The aqueous solution of ferrous sulfate $(FeSO_4)$ is acidic because......

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 $BA$?

$A$ $100 \ mL$, $0.1 \ M$ solution of ammonium acetate is diluted by adding $100 \ mL$ of water. The pH of the resulting solution will be ($pK_{a}$ of acetic acid is nearly equal to $pK_{b}$ of $NH_{4}OH$)

For which of the following pairs of salts is the degree of hydrolysis independent of dilution?

Which of the following salts will undergo hydrolysis when dissolved in water?

When a salt of a weak acid and a weak base is dissolved in water at $25\,^{\circ}C$,the $pH$ of the resulting solution will always :-