$A$ salt is formed from a weak acid and a weak base. If $pK_b > pK_a$,then the $pH$ of the aqueous solution is $.....$

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.

$A$ solution of sodium cyanide $(NaCN)$ is . . . . . . .

Calculate $[H^{+}]$ at the equivalence point during the titration of $25 \ mL$ of $0.1 \ M$ weak acid $HA$ $(K_a = 10^{-5})$ with $0.05 \ M \ NaOH$ solution.

Which of the following salts has the minimum $pH$ in an aqueous solution?

Which of the following relations is correct for a solution of $CH_3COONH_4$ salt? Concentration $0.001 \ M$,degree of hydrolysis $x_1$; Concentration $0.002 \ M$,degree of hydrolysis $x_2$.