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What does the equivalence point show during a titration?
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chemical analysis
Strip of pH paper resting on specimen, with a comparison chart.
In chemical analysis, the equivalence point of a titration indicates that an exactly equivalent amount of titrant has been added to the sample. At this stage, the desired constituent has reacted in a definite, known proportion with the added reagent.1
It is important to distinguish the equivalence point from the end point. While the equivalence point is the theoretical completion of the reaction, the end point is the experimental moment signaled by a physical change, such as a color shift in an indicator or a change in electrical properties. The difference between these two points is known as the titration error, which analysts strive to minimize through careful selection of detection methods.1