Question
Calculate the pOH of a solution at 250C that contains 1 x 10-10 M of hydronium ions.
-
7
-
4
-
9
-
1
Solution
B.
4
[H3O+] = [H+] = 10-10
pH + pOH = [14]
pH = - log [ H+]
pH = - log [10-10]
pH = 10
⇒ pOH + 10 = 14
⇒ pOH = 14-10 = 4
