The $pK_a$ of a weak acid $(HA)$ and $pK_b$ of a weak base $(BOH)$ are $3.2$ and $3.4$ respectively. Find the $pH$ of their salt $(AB)$.

$A$ solution of $MgCl_2$ in water has $pH$:

Calculate the hydrolysis constant $(K_h)$ of the salt containing $NO_2^-$. Given the $K_a$ for $HNO_2 = 4.5 \times 10^{-10}$.

The compound whose $0.1 \, M$ solution is basic is

Which of the following $0.1 \ M$ aqueous solutions will be basic?

If the dissociation constant of $HCN$ is $10^{-7}$,what are the values of $pH$,$h$ (degree of hydrolysis),and $[OH^-]$ for a $10^{-3} \ M$ solution of $KCN$,respectively?