The $pH$ of $10^{-7} \ N \ HCl$ is

Assuming that $Ba(OH)_{2}$ is completely ionised in aqueous solution under the given conditions,the concentration of $H_{3}O^{+}$ ions in $0.005 \, M$ aqueous solution of $Ba(OH)_{2}$ at $298 \, K$ is $..... \times 10^{-12} \, mol \, L^{-1}$. (Nearest integer)

The $pH$ values of $(i) \ 0.1 \ M \ HCl_{(aq)}$,$(ii) \ 0.1 \ M \ KOH$,$(iii)$ tomato juice,and $(iv)$ pure water follow the order.

What will be the $pH$ value of $0.05 \, M$ $Ba(OH)_2$ solution?

The gastric juice in our stomach contains enough $HCl$ to make the hydrogen ion concentration about $0.01 \, mole/litre$. The $pH$ of gastric juice is

$pH$ of a $10 \ M$ solution of $HCl$ is