Question

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

Answer 1

The answer is pH will be greater than 7 at the equivalence point

Step-by-step explanation:

The acid releases a hydrogen ion, and the dissociation of this acid is characterized by being slow. The pH of the solution before titration is less than 7. As NaOH is added to the solution, the H + ions released by the acid react with the OH ions in the strong base. At the equivalence point, salt will be produced. Since the titration is between a weak acid and a strong base, the pH of the solution is not equal to 7. After neutralization is complete, the solution will have a conjugate base. This conjugate base reacts with water to produce a weak acid and OH ions. This is why the pH of the solution will be greater than 7.