jodometrisissä

Jodometrisissä is a Finnish term that translates to "in iodometric" or "iodometrically" in English. It refers to a type of chemical analysis that uses iodine in its reactions. Specifically, iodometry is a quantitative analytical method that involves the determination of iodine. It is most commonly used to determine the concentration of oxidizing or reducing agents in a solution.

There are two main types of iodometric titrations: direct and indirect. In a direct iodometric titration, the substance being analyzed reacts directly with iodine. In an indirect iodometric titration, the substance being analyzed first reacts with a known amount of iodine or a substance that liberates iodine, and then this liberated iodine is titrated with a standard reducing agent, typically sodium thiosulfate. The endpoint of the titration is usually detected using starch indicator, which forms a dark blue complex with iodine.

Iodometry is a versatile technique and finds applications in various fields, including the determination of vitamin C content, the analysis of halogens, and the measurement of dissolved oxygen. It is a relatively simple and cost-effective method, making it suitable for both laboratory and field analyses. The accuracy of iodometric titrations depends on careful control of reaction conditions, such as pH and temperature, and the use of standardized reagents.