Question

The pH of a solution is 7.0. What is the pOH?

Answer 1

`"pOH" = 7.0`

Explanation:

A fundamental equation to know regarding `"pH"` is that (near `25^"o""C"`),

`"pH" + "pOH" = 14.00`

That is, near `25^"o""C"`, the sum of the `"pH"` and `"pOH"` is always `14.00`.

Therefore,

`"pOH"= 14.00 - "pH" = 14.00 - 7.0 = color(red)(7.0`

Since the `"pH"` and `"pOH"` are equal, this solution is said to be neutral; i.e. it is neither acidic nor alkaline (basic).