When the hydrogen ion concentration $[H^{+}]$ changes by a factor of $1000$,the value of $pH$ of the solution $.........$.

At $80\,^{\circ}C,$ distilled water has $[H_3O^{+}]$ concentration equal to $1 \times 10^{-6} \, mol/L.$ The value of $K_w$ at this temperature will be

The hydrogen ion concentration of the oceans is about $2 \times 10^{-9} \ M.$ What is the $pH$?

Write about methods of measurement of $pH$ of a solution.

$pOH$ of water is $7.0$ at $298 \ K$. If water is heated to $350 \ K$,which of the following should be true?

At a certain temperature $T$,if the conductivity of pure water is $5.5 \times 10^{-7} \ S \ cm^{-1}$,calculate the $pH$ of water at the given temperature. Given: $\lambda_{H^{+}}^\infty = 350 \ S \ cm^2 \ eq^{-1}$ and $\lambda_{OH^{-}}^\infty = 200 \ S \ cm^2 \ eq^{-1}$.