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What is the hydroxide ion concentration in an aqueous solution with a hydrogen ion concentration of concentration 2.70 x 10-2 M?

What is the hydroxide ion concentration in an aqueous solution with a hydrogen ion concentration of concentration 2.70 x 10-2 M?
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19 votes
What is the hydroxide ion concentration in an aqueous solution with a hydrogen ion concentration of

concentration
2.70 x 10-2 M?

User Kannan Suresh
by
8.6k points

1 Answer

5 votes
[H+][OH-] = 1x10-14 = Kw (Memorize this relationship)
(2.70x10-2)[OH-] = 1x10-14
[OH-] = 1x10-14/2.70x10-2
[OH-] = 3.70x10-13 M (assuming you ignore the autoionization of H2O)
User Matt Crysler
by
7.7k points
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