titrauskäyrän

A titrauskäyrä, or titration curve in English, is a graphical representation of the progress of a titration. It plots the volume of titrant added against the corresponding pH or potential measured. The shape of the titrauskäyrä provides crucial information about the reaction occurring between the analyte and the titrant. Key features of a titrauskäyrä include the buffer region, the equivalence point, and the endpoint.

The equivalence point is the theoretical point in a titration where the amount of titrant added is stoichiometrically equal to the amount of analyte present. This is often observed as a sharp change or inflection point on the titrauskäyrä. The endpoint is the point where an indicator changes color, signaling the completion of the titration. Ideally, the endpoint should closely approximate the equivalence point.

Different types of titrations yield distinct titrauskäyrät. For example, the titration of a strong acid with a strong base results in a steep, symmetrical curve with a sharp rise around the equivalence point. The titration of a weak acid with a strong base or a weak base with a strong acid will show a more gradual change in pH and a less pronounced inflection at the equivalence point. Analyzing the shape and specific points on a titrauskäyrä allows chemists to determine the concentration of an unknown solution and to identify the nature of the acid-base reaction.