Ionic Product of Water

$9.8\% \mathrm{W}/\mathrm{V}$ $300 \mathrm{mL}$ solution ${\mathrm{H}}_3{\mathrm{PO}}_{4^{}}$ reacts with $20 \% \mathrm{W}/\mathrm{V}$ $200 \mathrm{mL}$ solution of $\mathrm{NaOH}$. Find the nature of solution, and, concentration of ${\mathrm{H}}^{+}$ and ${\mathrm{OH}}^{-}$ ions.

An aqueous solution contains ${10}^{-4}\mathrm{M} \left[{\mathrm{H}}^{+}\right]$ ions. If it is diluted by mixing equal volume of water then the concentration of ${\mathrm{OH}}^{-}$ in $\mathrm{mol} {\mathrm{dm}}^{-3}$ will be

The $\mathrm{pH}$ of pure water at $80°\mathrm{C}$ is

Calculate the percent error in the hydrogen-ion concentration made by neglecting the ionization of water in a $1\times {10}^{-6} \mathrm{M} \mathrm{NaOH}$ solution.

The ionic product of water changes when:

What is the Ionic Product of Water?

The concentration of ${\mathrm{OH}}^{-}$ ions in neutral solution is:

The ionic product of water ____ if a few drops of acid or base are added to it.

What happens to the ionic product of water $\left({\mathrm{K}}_{\mathrm{W}}\right)$ if some acid is added to it? 

Addition of acid changes ionic product of water.

The ionic product of water does not change when we add acid to it.

What happens to the ionic product of water when we add acid to it?

Explain the effect of addition of an acid on ionic product of water.

The conjugate base of water is 

How many litres of water must be added to $1$ litre of aqueous solution of $\mathrm{HCl}$ with a pH of $1$ to create an aqueous solution with pH of $2$?

The ionic product of water _____ if a few drops of acid or base are added to it.(remains constant/decreases/increases)

The ionic product of water _____ if a few drops of acid or base are added to it.(remains same/decreases/increases)

The ionic product of water _____ if a few drops of acid or base are added to it.

Calculate the ${\mathrm{K}}_{\mathrm{w}}$ of water at $90°\mathrm{C}$, if pure water has $\left[{\mathrm{H}}_3{\mathrm{O}}^{+}\right]={10}^{-6 }\mathrm{M}$  at the given temperature.

Which of these statements is correct about pure water?