The equivalence point in an acid-base titration is the point where the acid and the base are present in their molar ratios.

The equivalence point in an acid-base titration is the point where there is half the amount of acid compared with the base.

The equivalence point in an acid-base titration is the point where the solution changes colour.

The equivalence point in an acid-base titration is the point where there is double the amount of acid compared with the base.