Question

Why is pOH important?

Answer 1

I will try to explain.

Explanation:

`pH` and `pOH` go hand in hand and make up a fundamental relationship in acid-base chemistry:

`pH+pOH=pKw`

Where `pKw=14` at 25 degrees Celcius, though the value varies with temperature.

This is important since when doing calculations we typically answer in pH and this relationship allows us to relate the `pH` which is the negative logarithm of `H^+` concentration, against `pOH` which is the negative logarithm of the `OH^-` concentration in a solution.

This property allows us to say something about both the Hydroxide concentration and the proton concentration in a solution.