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What is the OH- concentration of a solution whose pH is 12.40?
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What is the OH- concentration of a solution whose pH is 12.40?

User Boaz Frenkel
by
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1 Answer

6 votes
pH + pOH = pKw = 14

12.40 + pOH = 14

pOH = 14 - 12.40

pOH = 1.6

[OH⁻] =
10 ^(-pOH)

[OH⁻] =
10 ^(-1.6)

[OH⁻] = 2.5x10⁻² M

hope this helps!
User Heejung
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