ekvivalointipisteessä

Ekvivalointipisteessä is a Finnish term that translates to "at the equivalence point" in English. It is a concept primarily used in chemistry, particularly in titration experiments. The equivalence point is a crucial stage in a titration where the amount of titrant added is stoichiometrically equivalent to the amount of analyte present in the solution. This means that the reactants have completely reacted with each other according to their balanced chemical equation.

In a typical titration, a solution of known concentration (the titrant) is gradually added to a solution of unknown concentration (the analyte) until the reaction is complete. The equivalence point is not always directly observable but is usually indicated by a change in a physical property of the solution, such as a color change or a change in pH. This observable change is detected using an indicator.

The determination of the equivalence point is fundamental for calculating the concentration or amount of the analyte. By knowing the volume and concentration of the titrant added to reach the equivalence point, and understanding the stoichiometry of the reaction, one can accurately determine the initial quantity of the analyte. The equivalence point is an ideal theoretical point, and in practice, the point at which the indicator changes color (the endpoint) is used to approximate it. The accuracy of a titration relies on how closely the endpoint matches the equivalence point.