The ionic product of water $(K_w)$ increases if:

The $pH$ of milk,black coffee,tomato juice,lemon juice and egg white are $6.8, 5.0, 4.2, 2.2$ and $7.8$ respectively. Calculate the corresponding hydrogen ion concentration $[H^+]$ in each.

At $25 \, ^\circ C$,the $pH$ value of a solution is $6$. The solution is:

The value of the ionic product of water $(K_w)$ at $393 \ K$ is:

$A$ $pH$ of $7$ signifies

If the ionic product of water $(K_w)$ is $1.96 \times 10^{-14}$ at $35^{\circ} C$, what is its value at $10^{\circ} C$?