$pH$ of an aqueous solution of $NH_4Cl$ is

The degree of hydrolysis of a salt of weak acid and weak base in its $0.1 \, M$ solution is found to be $50 \%$. If the molarity of the solution is $0.2 \, M$,the percentage hydrolysis of the salt should be $...... \%$.

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

When solid potassium cyanide $(KCN)$ is added to water,then:

For which of the following pairs of salts is the degree of hydrolysis independent of dilution?

The aqueous solution of $FeCl_3$ is acidic in nature. This is due to: