A solution with a hydroxide ion concentration of 4.15 × 10^-7 M is ________ and has a hydrogen ion concentration of ________. A)acidic,2.41 × 10^-7 M B)acidic,2.41 × 10^-8 M C)basic,2.41 × 10^-7 M D)basic,2.41 × 10^-8 M

Question

Quizplus · Accepted Answer

The solution is basic because the hydroxide ion concentration is greater than 1 × 10^-7 M, which is typical for basic solutions. The hydrogen ion concentration can be found using the water dissociation constant (Kw = 1 × 10^-14 at 25°C), so [H+] = Kw / [OH-] = 1 × 10^-14 / 4.15 × 10^-7 = 2.41 × 10^-8 M.

A Solution with a Hydroxide Ion Concentration of 4