Final answer:
The equivalence point in titration can be determined by using indicators that change color when the reaction is complete or by measuring physical properties of the solution that change at the equivalence point.
Step-by-step explanation:
The two methods used for determining the equivalence point in titration are through the use of indicators and by monitoring changes in certain physical properties of the solution. Indicators are substances that change color at or near the equivalence point, which is when stoichiometrically equivalent amounts of acid and base have reacted. Additionally, physical properties such as electrical potential, pH, or conductivity can be measured to identify the equivalence point. This can involve plotting changes in these properties against the volume of titrant added until a distinct change indicates the completion of the reaction or a sharp rise on the titration curve.