Question

What is the effect of temperature on the ionic, product of water? How will it change the pH value of a neutral solution?

Answer 1

As temperature increases, the concentration of H⁺ and OH^– increases and hence pH value decreases.

At 298 K

`[H^+][OH^(-) = 10^(-14)]`

∴  for neutral solution

pH = 7

and at high temperature pH will be less than 7.