What is the hydroxide ion concentration in an aqueous solution when the hydronium ion concentration equals 1 × 10-10 moles per liter?

Question

Quizplus · Accepted Answer

The concentration of hydroxide ions can be found using the water dissociation constant (Kw = 1 × 10^-14 at 25°C). Since Kw = [H3O+][OH-], and given [H3O+] = 1 × 10^-10 M, solving for [OH-] gives [OH-] = Kw / [H3O+] = 1 × 10^-14 / 1 × 10^-10 = 1 × 10^-4 M.

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