Apentix/AP Chemistry/Unit 8: Acids and Bases/Question
AP Chemistrymediummcq1 pt

In titration terminology, the endpoint differs from the equivalence point because the endpoint is:

A.where moles of added titrant exactly equal moles of analyte
B.always fixed at pH 7 regardless of the system
C.where the indicator changes color, ideally coinciding with the equivalence point
D.the point where the analyte is half consumed

Explanation

Core Concept

The equivalence point is the stoichiometric moment when titrant has reacted with all analyte, fixed by the balanced equation. The endpoint is the experimental signal, the color change of the added indicator. Good design picks an indicator whose transition range brackets the equivalence point so the two nearly coincide.

Correct Answer

Cwhere the indicator changes color, ideally coinciding with the equivalence point

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