A solution with a hydrogen ion concentration of 3.25 × 10^-⁶ mol L^-1 is ________ and has a hydroxide ion concentration of ________. A)acidic,3.08 × 10^-⁸ mol L^-1 B)acidic,3.08 × 10^-⁹ mol L^-1 C)basic,3.08 × 10^-⁸ mol L^-1 D)basic,3.08 × 10^-⁹ mol L^-1

Question

Quizplus · Accepted Answer

A solution with a hydrogen ion concentration of 3.25 × 10^-11 mol L^-1 is acidic, as it has a pH less than 7. To find the hydroxide ion concentration of this solution, we can use the equation: Kw = [H+][OH-], where Kw is the ion product constant of water (1.0 × 10^-14 at 25°C). Rearranging this equation, we get: [OH-] = Kw/[H+]. Substituting the values, we get: [OH-] = 1.0 × 10^-14/3.25 × 10^-11 = 3.08 × 10^-4 mol L^-1.

Therefore, the solution is acidic with a hydrogen ion concentration of 3.25 × 10^-11 mol L^-1 and a hydroxide ion concentration of 3.08 × 10^-4 mol L^-1. The only choice that matches these values is B.

A Solution with a Hydrogen Ion Concentration of 3