Final answer:
The statement that the half-equivalence point is located within the buffer region of a titration curve is true. The half-equivalence point corresponds to the point in the titration where the concentrations of the weak acid and its conjugate base are equal, which is a characteristic feature of the buffer region on the titration curve.
Step-by-step explanation:
The question asks about the location of the half-equivalence point in the context of acid-base titration. In titrations, it is common to encounter a specific point called the half-equivalence point, which is notably different from the equivalence point. The half-equivalence point is where half of the analyte has been neutralized by the titrant. The buffer region of a titration curve is a zone where the solution resists changes in pH upon small additions of acid or base. This is primarily due to the presence of both the weak acid and its conjugate base in the solution. This characteristic flattening of the curve within the buffer region occurs around the pKa of the weak acid being titrated.
Based on the provided references and general understanding of acid-base titrations, the statement in the question is True. The half-equivalence point indeed falls within the buffer region of a titration curve. The buffer region is reflected in the titration curve as a plateau, where the pH changes very slightly with the addition of titrant. At the half-equivalence point of a weak acid, the concentrations of the acid ([HA]) and its conjugate base ([A-]) are equal. This corresponds to the pKa of the acid, which is a characteristic feature of a buffer solution. This buffer region efficiently demonstrates the acid-base properties of the weak acid and its conjugate base due to their similar concentrations.