Example of pOH:

Example: What is the hydrogen ion concentration [H+] and the hydroxyl concentration [OH-] in a solution with a pH of 5.5?

Solution: [H⁺] = 10^-pH

                        = 10^-5.5

                        = (10^-6)(10^-5)

                        = 3.16 × 10^-6 moles/liter

 Since   pOH +   pH = 14

                        pOH   = 14  -  5.5

                      pOH  = 8.5

and       [OH-] = 10^-pOH

                     = 10^-8.5

                        = (10^-9)(10^-5)

                        = 3.16 × 10^-9 moles/liter