Chemistry, asked by manascool9468, 10 months ago

Standardization of sodium thiosulphate solution with potassium dichromate solution

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Answered by Thebrainlist

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Sodium thiosulphate solution is standardized against potassium dichromate in presence of hydrochloric acid and potassium iodide. ... The iodine formed in the reaction oxidizes sodium thiosulphate giving sodium tetrathionate ion and the end point is detected by starch solution.

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