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

Question

Quizplus · Accepted Answer

When titrating a weak monoprotic acid with NaOH, the equivalence point occurs when all of the acid molecules have reacted with the base molecules to form a salt and water. At this point, the pH will be greater than 7 because the salt (formed from the acid and base) will have a basic anion (from the base) and an acidic cation (from the acid). This will result in a slightly basic solution. Therefore, choice C is the correct answer.

When Titrating a Weak Monoprotic Acid with NaOH at 25°C,the