When a weak acid is titrated with a strong base, the pH at the equivalence point A)is greater than 7.0. B)is equal to 7.0. C)is less than 7.0. D)is equal to the p K _a of the acid. E)is equal to 14.0 − p K _b, where p K _b is that of the base.

Question

Quizplus · Accepted Answer

When a weak acid is titrated with a strong base, the equivalence point occurs when all of the acid has been neutralized by the base. At this point, the solution will contain only the conjugate base of the weak acid, which will hydrolyze and lead to an increase in pH. Therefore, the pH at the equivalence point will be greater than 7.0.

When a Weak Acid Is Titrated with a Strong Base