In pure water at 298 K, the concentration of hydronium ions is
A1.0 x 10^-14 M
B1.0 x 10^-7 M
C1.0 x 10^-1 M
D1.0 x 10^-10 M
Answer & Solution
Correct answer: B. 1.0 x 10^-7 M
Hydronium equals hydroxide in pure water, each being 1.0 x 10^-7 mol/L at 298 K.
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