Calculate the hydronium ion concentration in an aqueous solution that contains 2.50 × 10^-⁶ mol L^-1in hydroxide ion. A)4.00 × 10^-⁷ mol L^-1 B)4.00 × 10^-⁸ mol L^-1 C)4.00 × 10^-⁹ mol L^-1 D)5.00 × 10^-⁹ mol L^-1

Question

Quizplus · Accepted Answer

The concentration of hydronium ions can be calculated using the water ion product, Kw = [H3O+][OH-] = 1.0 × 10^-14 at 25°C. Given [OH-] = 2.50 × 10^-6 M, solving for [H3O+] gives [H3O+] = Kw / [OH-] = (1.0 × 10^-14) / (2.50 × 10^-6) = 4.00 × 10^-9 M.

Calculate the Hydronium Ion Concentration in an Aqueous Solution That