This reaction is iodometric because iodine is get from KI. Iodometric Titration: Principle, Example, Advantages, and How Does it Work According to the specified limits for iodate in iodised salt, the volume of 0.002 mol L−1 sodium thiosulfate required in the above titration should lie between 5.9 mL and 15.4 mL. Iodometric Titration: Principle, Example, Advantages, and How Does it Work Swirl or stir gently during titration to minimize iodine loss. This should be done if possible as iodine solutions can be unstable. Whether compound X is going to be reduced/oxidized and to what degree is mostly dictated by the corresponding redox potential for the given medium. After solution is complete, add 10 mL HCl (sp gr 1.19). The redox reaction between Sodium thiosulfate with potassium iodate (KIO 3) is used to determine the titer of Na 2 S 2 O 3 potentiometrically. Iodometry is a redox titration whereby the appearance or disappearance of iodine indicates the equivalence point. endobj 3 0 obj Redox titration using sodium thiosulphate is also known as iodometric titration. 2005-08-08. Experiment no. 1: Iodometric titration of potassium dichromate and ... HERE are many translated example sentences containing "ΘΕΙΟΘΕΙΙΚΌ" - greek-english translations and search engine for greek translations. An iodine / thiosulfate titration Theory Aqueous iodine solutions normally contain potassium iodide (KI), which acts to keep the iodine in solution. Redox titration using sodium thiosulphate, Na 2 S 2 O 3 (usually) as a reducing agent is known as iodometric titration since it is used specifically to titrate iodine. Sodium thiosulfate solutions can be standardized by direct titration of the I 2 generated in the KIO 3 reaction using the starch-iodine complex as the indicator (remember that the iodine is actually in In addition, I-ions are necessary in order to keep in solution the I2 . AS Redox Titration-iodine-thiosulfate titration