redokstitrering

Redokstitrering, also known as redox titration or oxidation-reduction titration, is a quantitative chemical analysis technique used to determine the concentration of an analyte in a solution. This method relies on a redox reaction between the analyte and a titrant, where the titrant is a solution of known concentration. The principle behind redokstitrering is the transfer of electrons between the oxidizing and reducing species involved in the reaction.

During a redokstitrering, the titrant is gradually added to the analyte solution. At a specific point, known as the equivalence point, the moles of titrant added are stoichiometrically equivalent to the moles of analyte present in the solution. This equivalence point is typically detected using an indicator that undergoes a distinct color change, or by monitoring the potential difference of the solution with a suitable electrode. The volume of titrant used to reach the equivalence point, along with the known concentration of the titrant and the stoichiometry of the redox reaction, allows for the calculation of the analyte's unknown concentration. Common oxidizing agents used as titrants include potassium permanganate, potassium dichromate, and iodine. Reducing agents like sodium thiosulfate or ferrous sulfate can also be employed. Redokstitrering finds applications in various fields, including environmental monitoring, pharmaceutical analysis, and industrial quality control.