Mohr's salt is a

If the $pK_a$ value of $CH_3COOH$ is $4.74$,then the $pH$ value of $0.1 \ M \ CH_3COONa$ is ......

Which one of the following salts gives an aqueous solution which is weakly basic?

The ionization constant of nitrous acid is $4.5 \times 10^{-4}$. Calculate the $pH$ of $0.04 \ M$ sodium nitrite solution and also its degree of hydrolysis.

If the $pK_b$ for $CN^-$ is $4.7$ at $25\,^oC$,then the $pH$ of a $0.5\,M \,NaCN$ solution is:

$A$ solution of sodium acetate in water will