# Question #598b1

May 14, 2016

$p H = 4.7$

#### Explanation:

The concentration of $O {H}^{-}$ in the solution is:

$\left[O {H}^{-}\right] = 5.6 \times {10}^{- 10} M$, which will help us determine the $p O H$ of the solution, which is later on will allow us to find its $p H$.

$p O H = - \log \left[O {H}^{-}\right] = - \log \left(5.6 \times {10}^{- 10}\right) = 9.3$

Therefore, the $p H$ of this solution could be found by:

$p H = 14 - p O H = 14 - 9.3 = 4.7$

Here is a video that explains more this topic:
Acids & Bases | Nature, Strength & pH Scale.