What is the $pH$ of $0.02 \ M \ NaOH$ solution?

$40 \, mg$ of pure sodium hydroxide is dissolved in $10 \, L$ of distilled water. The $pH$ of the solution is

The solubility of $Sr(OH)_2$ at $298 \, K$ is $19.23 \, g/L$ of solution. Calculate the concentrations of strontium and hydroxyl ions and the $pH$ of the solution.

Equal volumes of two solutions $A$ and $B$ of a strong acid having $pH=6.0$ and $pH=4.0$ respectively are mixed together to form a new solution. The $pH$ of the new solution will be in the range

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

The $pH$ value of $1.0 \times 10^{-8} \ M \ HCl$ solution is less than $8$ because