# Does a solution with the concentration of [OH-] = 4.3 x 10^-5 M have a pH of 5?

##### 1 Answer
May 16, 2017

No... Not under any approximation.

As-written, the $\text{pOH}$ cannot be $5$ either...

"pOH" = -log["OH"^(-)] = 4.37 ne 5

And furthermore, since $\text{pH" + "pOH} = 14$,

"pH" = 14 - 4.37 = ??? ne 5

So... no. Definitely not $5$.