Which of the following solutions is basic A) [H₃O⁺] = 1.0 x 10^-10 M B) [OH^-] = 1.0 x 10^-10 M C) [H₃O⁺] 1.0 x 10^-7 M D) [OH^-]

Question

Which of the following solutions is basic A) [H₃O⁺] = 1.0 x 10^-10 M B) [OH^-] = 1.0 x 10^-10 M C) [H₃O⁺] > 1.0 x 10^-7 M D) [OH^-] < 1.0 x 10^-10 M E) [OH^-] = 1.0 x 10^-7 M

Quizplus · Accepted Answer

A solution is basic if the concentration of hydroxide ions [OH⁻] is greater than that of hydronium ions [H₃O⁺]. In choice A, [H₃O⁺] = 1.0 x 10⁻¹⁰ M, which means [OH⁻] = 1.0 x 10⁻⁴ M (since [H₃O⁺][OH⁻] = 1.0 x 10⁻¹⁴), indicating a basic solution.

Which of the Following Solutions Is Basic