What is the pOH of an aqueous solution that contains 5.3 x 10-13 H+?

POH = 1.73

Explanation:

For pure water, the values of [H3O+] and [OH-] are equal and thus their values are both 1.0 x 10-7. If there is an equal amount of acid and base present in any solution, the solution is called "neutral" and the pH of the solution is 7.

If the acid concentration is greater than the base concentration, the solution is acidic and the pH will be less than 7. If the base concentration is greater than the acid concentration, the solution is basic and the pH will be greater than 7.

The pH of a solution is defined as the negative log10 [H+].

The sum of the pH and pOH must always equal 14.

PH = - ㏒ (5.3 * 10⁻¹³)

PH = 12.27

Also, PH + POH = 14

∴ POH = 14 - PH = 1.73