# Problem: What is the [OH-] in a solution that has a pH of 11.70?a. 5.0x10-3 Mb. 2.0x10-12 Mc. 1.0x10-7 Md. 2.0x102 Me. 5.0x1011 M

###### FREE Expert Solution

We’re being asked to calculate [OH-] in a solution that has a pH of 11.70.

The OH- concentration can be calculated from pOH using the following equation:

$\overline{)\left[{\mathbf{OH}}^{\mathbf{-}}\right]{\mathbf{=}}{{\mathbf{10}}}^{\mathbf{-}\mathbf{pOH}}}$

The pH and pOH of a compound determine its acidity and basicity.

###### Problem Details

What is the [OH-] in a solution that has a pH of 11.70?

a. 5.0x10-3 M
b. 2.0x10-12 M
c. 1.0x10-7 M
d. 2.0x102 M
e. 5.0x1011 M