$1.825 \ g$ of $HCl$ is dissolved in $5 \ L$ of water. What are the concentrations of $H^+$ and $OH^-$ ions?

What is the $pH$ of a $0.001 \, M \, KOH$ solution at $90 \, ^\circ C$ $(K_w = 10^{-12})$?

$pH$ of $10^{-8} \ M$ $Ba(OH)_2$ solution will be

If $0.4 \ g$ of $NaOH$ is present in $1 \ L$ of solution,then the $pH$ of the solution is .....

The $pH$ of a completely dissociated $0.005 \ M \ H_2SO_4$ solution is:

Millimoles of calcium hydroxide required to produce $100 \ mL$ of the aqueous solution of $pH$ $12$ is $x \times 10^{-1}$. The value of $x$ is $..............$. (Nearest integer). Assume complete dissociation.