The degree of hydrolysis of a $0.01 \ M$ ammonium acetate solution is = ........ [ $K_h = 3.175 \times 10^{-5}$ ]

The $pH$ of the solution obtained on neutralization of $40 \ mL \ 0.1 \ M \ NaOH$ with $40 \ mL \ 0.1 \ M \ CH_3COOH$ is

Which of the following salts contains an anion that undergoes hydrolysis?

Which of the following salt solutions is highly acidic?

Explain the following with reasons:
$(i)$ $NaCl$ solution is neutral. The solution of strong acid and strong base salts is neutral.
$(ii)$ $NaCH_3COO$ solution is basic. The solution of strong base and weak acid salt is basic.
$(iii)$ $NH_4Cl$ solution is acidic. The solution of weak base and strong acid salt is acidic.
$(iv)$ The solution of $NH_4CH_3COO$ is (almost) neutral. The solution of weak acid - weak base salts is almost neutral.

$pK_a$ of acetic acid is $4.74$. The concentration of $CH_3COONa$ is $0.01 \ M$. The $pH$ of $CH_3COONa$ is