$0.001 \ mol$ of a strong electrolyte $M(OH)_2$ is dissolved to make $20 \ mL$ of a saturated solution. Calculate its $pH$ $(K_w = 1 \times 10^{-14})$.

Calculate the $pH$ of a mixed solution containing $300 \ mL$ of $0.05 \ M \ H_2SO_4$ and $150 \ mL$ of $0.05 \ M \ KOH$. (in $.301$)

If $0.561 \, g$ of $KOH$ is dissolved in water to give $200 \, mL$ of solution at $298 \, K$. Calculate the concentrations of potassium,hydrogen and hydroxyl ions. What is its $pH$?

The $pH$ of the aqueous solution containing $0.49 \ g$ of $H_2SO_4$ in one litre is

Given the concentrations of different acids in the following mixtures,which mixture has the highest $pH$?

$0.023 \ g$ of sodium metal is reacted with $100 \ cm^{3}$ of water. The $pH$ of the resulting solution is