When an analyte that is a reducing agent is titrated directly with a standard iodine solution, the method is called "iodimetry".
When an analyte that is an oxidizing agent is added to excess iodide to produce iodine, and the iodine produced is determined by titration with sodium thiosulfate, the method is called "iodometry".
IodOmetric is the titration Of I2 and IodImetric is the titration wIth I2
iodometry
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In iodometry sodium thiosulphate is used because it is standardized by potassium dichromate and it is the best and relaible way to standardized sodium thiosulphate using iodometric titration. Infact sodium thiosulphate is also standardized by iodimetry. The difference between both of them is only of iodine. In iodometry iodine gas is liberated that will further react with sodium thiosulphate but in iodimetry standard solution of iodine is used.
Iodometry & iodimetry Iodometry An application of iodine chemistry to oxidation-reduction titrations for the quantitative analysis in certain chemical compounds, in which iodine is used as a reductant and the iodine freed in the associated reaction is titrated
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Iodometric titration is synonymous with redox titration method. Iodine is a universal laboratory reagent because it reacts directly with an array of organic and inorganic substances. Since iodometric titration is a form of redox or oxidation-reduction reaction, it can accurately measure the amount of oxidizing or reducing agents in a chemical reaction. Also, it can be reversed to either direction in an iodine/iodide reaction.
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salts of iodine is used to liberate iodine.i.e iodine is liberated indirectly
If you mean iodometry, it is the use of the chemical iodine in a process called titration. Titration is often used to determine the concentration of a chemical in a solution. A common use of iodometry was determination of salt concentration in salt water. It is not the most accurate or quickest way these days.
The iodine value is the measure of the unsaturation of fats and oils. It is expressed as the number of grams of iodine absorbed by 100 g of the fat under the test conditions used.
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