Chemistry
Understanding Acid-Base Titration Curves and Endpoints
Quick fact
The steepest part of a titration curve occurs near the equivalence point, and a single drop of titrant can change the pH by several units—this is why indicator selection is so crucial.
Why this is interesting
You've probably seen a pH meter jump dramatically during a titration—but why does the pH stay almost constant for a while and then suddenly change? What's really happening inside the flask at that moment?