Question

For a solution with a hydrogen ion concentration of 3.48x10^-8 M determine

pH -

pOH -

(OH-)

Answer 1

pH = -log[H]
same with pOH.

Answer 2

Given [H+] = 3.48x10^-8 M

Take the negative log of the concentration to get pH:
-log(3.48x10^-8) = 7.46 pH

pOH is just 14 - pH:
14 - 7.46 = 6.54 pOH

Use 10^(-pOH) to find concentration of pOH:
10^(-6.54) = 2.87x10^-7 M = [OH-]