DAT Bootcamp General Chemistry Practice Test 2026 - Free General Chemistry Practice Questions and Study Guide

The equivalence point is the moment when the titrant has been added in exactly the amounts needed to react with the analyte according to the reaction’s stoichiometry; in other words, the moles of one reactant are chemically equivalent to the moles of the other. At this point the reaction is complete in the sense that neither reactant remains in excess (aside from any minor equilibrium effects that may apply in special cases). This is why the definition focuses on chemically equivalent amounts. While in a strong acid–strong base titration the pH at equivalence is around 7, the exact pH depends on the strengths of the acids and bases involved. The endpoint, by contrast, is when an indicator changes color, which is used to estimate the equivalence point but may not line up exactly with it. The start of the titration is simply the initial state before any titrant is added.