Question

Does pink indicate the equivalence point or endpoint?
A) Equivalence point
B) Endpoint

Answer 1

In acid-base titrations, the equivalence point and endpoint are often the same. In the case of phenolphthalein, a sharp color change from colorless to pink is observed at the equivalence point.

Step-by-step explanation:

In acid-base titrations, the equivalence point is the point when the stoichiometric amount of the base has been added to the acid. On the other hand, the endpoint is the point when the indicator changes color. Usually, the equivalence point and endpoint are almost the same. In the case of phenolphthalein, a common indicator, a sharp color change from colorless to pink will be observed within a very small volume interval around the equivalence point.