# How do you calculate pOH of NaOH?

Jun 23, 2017

#### Answer:

Well, you need a concentration first........

#### Explanation:

$p O H = - {\log}_{10} \left(\left[H {O}^{-}\right]\right)$. So we need to know $\left[H {O}^{-}\right]$ before taking $p O H$.

It is a fact that given the autoprotolysis of water.......

$p H + p O H = 14$, so if you know one you know t'other........