When titrating a weak base with HCl 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

EAt the equivalence point of titrating a weak base with a strong acid like HCl, the solution will be acidic because the salt formed hydrolyzes to produce an acidic solution, making the pH less than 7. The moles of acid and base required to reach the equivalence point depend on their stoichiometry in the balanced equation, not on their strengths. However, for a 1:1 stoichiometric reaction, equal moles of acid and base are required. The statement about requiring more moles of acid than base is incorrect without specifying the stoichiometry of the reaction; however, in the context of typical titrations where they react in a 1:1 ratio, the amount of acid and base needed to reach the equivalence point would be the same, making both A and E correct in the context of the question's implications.

When Titrating a Weak Base with HCl at 25°C,the