The aqueous solution of disodium hydrogen phosphate $(Na_2HPO_4)$ is:

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

Which of the following aqueous solutions will have the highest $pH$?

The formula $K_h = K_w / K_a$ is applicable to which of the following salts?

$A$ salt $'X'$ is soluble in water and has a $pH = 7$. However,the resulting solution exhibits alkaline properties. Then the salt is formed from -

$A$ $100 \ L$ solution of $KCN$ undergoes $3.7\%$ hydrolysis. If the dissociation constant of $HCN$ is $7.2 \times 10^{-10}$,find the value of $K_w$.