1.

`pOH` of `H_(2)O` is `7.0` at `298K`. If water is heated at `350 K`, which of the following statement should be true?A. `pOH` will decrease.B. `pOH` will increase.C. `pOH` will remain `7.0`.D. concentration of `H^(+)` ions will increase but that of `OH^(-)` will decrease.

Answer» Correct Answer - A
`[OH^(-)]=sqrt(K_(w))` in pure water.
So as temperature increases `K_(w)` decreases `implies [OH^(-)]` decreases.


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