For pure water,

Options

A. Both pH and pOH decrease with increase in temperature
B. Both pH and pOH increase with decrease in temperature
C. pH decreases and pOH increases with increase in temperature
D. pH increases and pOH decreases with increase in temperature

Answer

A

Explanation

With increase in temperature the ionisation of `H_(2)O` increases and hence the `[H^(o+)]` and `[overset(ɵ)(O)H]` increases. Therefore, pH and pOH decreases with increases of temperature.