$pH$ value of a solution,whose hydronium ion concentration is $6.2 \times 10^{-9} \ mol/L$,is

What is the $pH$ of a $0.01 \ M$ solution of glycerol? (Given for glycerol: $K_{a1} = 4.5 \times 10^{-3}$,$K_{a2} = 1.7 \times 10^{-10}$)

For a $10 \ M \ CH_3COOH$ solution,if $K_a = 10^{-5}$,what will be the values of $[H^{+}]$ and $pH$ respectively?

The dissociation constant of a base $BOH$ at $25^{\circ} C$ is $1.0 \times 10^{-12}$. The concentration of $OH^{-}$ in a $0.01 \ M$ aqueous solution is .......

Calculate the $pH$ of a $0.02 \ M$ ammonia solution that is $5\%$ ionized.

$A$ solution of weak acid $HA$ containing $0.01 \ mol/L$ of acid has $pH = 4$. The percentage degree of ionisation of the acid and the ionisation constant of acid are respectively.