Equivalence Point (in Chemistry)

The equivalence point in chemistry is the moment during a titration when the amount of added reactant (usually a solution of known concentration) exactly reacts with the substance being analyzed, according to their balanced chemical equation. At this point, the reactants have combined in perfect proportion, so neither is in excess. This is often detected by a sudden change in properties such as pH or color, helping chemists determine the precise quantity needed to completely react with the substance. It signifies the completion of the chemical reaction under the set conditions.