Calculate the hydronium ion concentration in an aqueous solution with a pH of 9.85 at 25 °C. A) 7.1 × 10^-5 mol L^-1 B) 4.2 × 10^-10 mol L^-1 C) 8.7 × 10^-10 mol L^-1 D) 6.5 × 10^-5 mol L^-1 E) 1.4 × 10^-10 mol L^-1

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Quizplus · Accepted Answer

The hydronium ion concentration [H₃O⁺] can be calculated using the formula [H₃O⁺] = 10^(-pH). For a pH of 9.85, [H₃O⁺] = 10^(-9.85) = 1.4 × 10^(-10) mol L⁻¹.

Calculate the Hydronium Ion Concentration in an Aqueous Solution with a PH