What is the pH of a solution with [OH-] = 1 x 10-4 M?

10.0
-10.0
4.0
1.0 x 10-10
-4.0

2007-12-02 13:49:54 · 2 answers · asked by sonia 1 in Science & Mathematics ➔ Chemistry

10.0
[H+] X [OH-] = 1 x 10-14 M
So [H+] = 1 x 10-10 M
pH = -log [H+]
pH = 10

2007-12-02 14:38:39 · answer #1 · answered by Tim C 7 · 0⤊ 1⤋

p [OH] = - log 1 x 10 - 4 = 3
pH = 14- p [OH]
=14-3 = 11

pH =11

2007-12-03 04:25:46 · answer #2 · answered by sugar 3 · 0⤊ 0⤋

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