Which one of these responses is true with regard to a 0.1 M solution of a weak acid HA? A) [H⁺] 0.1 M. B) pH = 1.0 C) [H⁺] 1.0 E) [OH^-] [H⁺]

Question

Which one of these responses is true with regard to a 0.1 M solution of a weak acid HA? A) [H⁺] > 0.1 M. B) pH = 1.0 C) [H⁺] < [A^-] D) pH > 1.0 E) [OH^-] > [H⁺]

Quizplus · Accepted Answer

A 0.1 M solution of a weak acid will only partially dissociate, meaning that [H⁺] will be less than 0.1 M and [A^-] will be greater than 0 M. The pH of the solution will be greater than 1.0, as the weak acid will not completely dissociate and release all of its H+ ions. Therefore, the correct choice is D, as it is the only option that states the pH will be greater than 1.0.

Which One of These Responses Is True with Regard to a 0.1