Question

The value of ionic product of water changes with temperature.

• A. True
• B. False

Answer 1

The correct option is A True

$Kw$ is very temperature dependent.
By Le- Chatelier's principle, as the temperature of the system increased, the position of equilibrium position will shift to the right to minimize the effect of the increased temperature.
The forward reaction is favoured reaction resulting in the production of more $H^{+}$ and $O{H}^{-}$, so the value of Kw will increase.
Since the concentration of hydrogen ion is higher at the higher temperature, the $pH$ of water will be lower at higher temperatures.