Ekvivalenttipisteessä

Ekvivalenttipisteessä is a Finnish term that translates to "at the equivalence point" in English. It is a term primarily used in chemistry, particularly in the context of titrations. An equivalence point is reached when the amount of titrant added is stoichiometrically equal to the amount of analyte present in the solution. In a titration, a solution of known concentration (the titrant) is gradually added to a solution of unknown concentration (the analyte) until the reaction between them is just complete. The equivalence point is the theoretical point where all the analyte has reacted with the titrant.

Detecting the equivalence point is crucial for determining the concentration of the analyte. This is often achieved using an indicator, a substance that changes color at or very near the equivalence point. Alternatively, instrumental methods like pH meters or conductivity meters can be used to monitor the reaction and identify the equivalence point based on changes in physical properties. The point where the indicator changes color is known as the endpoint, which ideally should coincide with the equivalence point. If there is a significant difference, it is called indicator error. Understanding the concept of ekvivalenttipisteessä is fundamental for accurate quantitative chemical analysis.