redokstitreerimist

Redokstitreerimist, also known as redox titration, is a quantitative chemical analysis technique used to determine the concentration of an unknown substance by reacting it with a solution of known concentration. This reaction involves the transfer of electrons between the analyte and the titrant, hence the term "redox" for reduction-oxidation.

In a typical redox titration, the titrant is a redox agent that either oxidizes or reduces the analyte. The reaction proceeds until all the analyte has been consumed, at which point the equivalence point is reached. This equivalence point is usually detected using an indicator or an electrochemical method, such as a potentiometer. The volume of titrant added at the equivalence point is then used to calculate the concentration of the analyte.

Redox titrations are widely used in various fields, including environmental monitoring, pharmaceutical analysis, and industrial quality control. For example, they can be used to determine the concentration of oxidizing agents like permanganate or dichromate, or reducing agents like ferrous ions or thiosulfate. The choice of titrant and indicator depends on the specific redox reaction being studied. Common redox titrants include potassium permanganate, potassium dichromate, and iodine. Indicators are substances that change color at or near the equivalence point, signaling the completion of the titration.