what is the equivalence point of a titration

The equivalence point of a titration is the point at which the amount of titrant added is just enough to completely neutralize the analyte solution. At this point, the moles of titrant (standard solution) equal the moles of the solution with unknown concentration, which is also known as the stoichiometric point. In an acid-base titration, the equivalence point is reached when the moles of base equal the moles of acid, and the solution only contains salt and water. The equivalence point can be visually identified by the change in pH, and an indicator is often used to help spot this point in an acid-base titration. A titration curve is the plot of the pH of the analyte solution versus the volume of the titrant added as the titration progresses. Before the equivalence point, there is an excess of the analyte solution in comparison to the titrant, resulting in specific pH levels depending on the nature of the analyte. At the equivalence point, the pH of the solution will be neutral.