The aqueous solutions of $Na_3BO_3$,$Na_3PO_4$,$NaCN$,and $CH_3COONa$ will be .......

Calculate $[H^{+}]$ of a $0.01 \ M$ $A^{+}B^{-}$ salt solution if the $K_a$ of $HB$ is $10^{-12}$.

On dilution,the $pH$ of $CH_3COONa$ solution:

$NH_4CN$ is a salt of a weak acid $HCN$ $(K_a = 6.2 \times 10^{-10})$ and a weak base $NH_4OH$ $(K_b = 1.8 \times 10^{-5})$. $A$ $1 \ M$ solution of $NH_4CN$ will be:

Solutions of equal concentration of the following substances are prepared separately. Which of these solutions will have the minimum $pH$?

The aqueous solution of $AlCl_3$ is acidic due to the hydrolysis of