How do you determine the endpoint of a titration if using an indicator vs. a pH meter?

• A. The indicator endpoint is the color change of the indicator; the pH meter endpoint is the volume at the steepest pH change near equivalence, as read on the pH meter.
• B. The indicator endpoint is the pH value corresponding to a fixed color; the pH meter endpoint is the maximum pH value recorded.
• C. Indicator endpoint is the onset of the color change; the pH meter endpoint is when pH equals 7.
• D. Indicator endpoint is the color change of the indicator; the pH meter endpoint is the volume at the steepest pH change near equivalence, as read on the pH meter.

Answer: (C)