When titrating a monoprotic strong acid with a weak base at 25 °C, the ________.
A) pH will be 7 at the equivalence point
B) pH will be greater than 7 at the equivalence point
C) titration will require more moles of base than acid to reach the equivalence point
D) titration will require more moles of acid than base to reach the equivalence point
E) pH will be less than 7 at the equivalence point

Question

Quizplus · Accepted Answer

When titrating a strong acid with a weak base, the pH at the equivalence point will be less than 7 because the solution will be slightly acidic due to the presence of excess acid. In addition, since the weak base is not as strong as the strong acid, more moles of base will be required to reach the equivalence point. Therefore, the correct answer is E.

When Titrating a Monoprotic Strong Acid with a Weak Base