The $pOH$ at which water is maximum dissociated at $25\,^{\circ}C$ is

The ionic product of water $(K_w)$ increases if:

At $298 \, K$,the equivalent conductivity of a $0.01 \, M$ solution of aniline hydrochloride is $122.5 \, \Omega^{-1} \, cm^2 \, eq^{-1}$,but in the presence of a sufficient excess of aniline to prevent hydrolysis,it is $106.5 \, \Omega^{-1} \, cm^2 \, eq^{-1}$. The equivalent conductivity of $HCl$ at infinite dilution is $426.0 \, \Omega^{-1} \, cm^2 \, eq^{-1}$. The hydrolysis constant of aniline is:

Derive the relation between $pH$ and $pOH$.

The $pH$ of a solution in which the $[H^{+}] = 0.01 \, M$ is

If $[H_3O^{+}] = 3.5 \times 10^{-8} \ M$,calculate $[OH^{-}]$ and $pH$ of the solution.