'''Equivalence point''' occurs during a chemical [[titration]] when equal amounts of [[acid]] and [[base (chemistry)|base]] have been reacted. A graph of [[pH]] against [[concentration]] becomes almost vertical at the equivalence point.
A striking fact about equivalence is that in a reaction the equivalence of the reactants as well as products is conserved.
The equivalence point of a titration does not mean that the solution has reached pH 7; merely that all the initial reactants have been reacted. The actual pH of the solution at equivalence point is determined by considering the acidity or basicity of the aqueous product of the reaction, most commonly by the Bronsted-Lowry Theory of acids and bases.
