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Chemistry 7 Online
OpenStudy (samigupta8):

A mixture of pure K2Cr2O7and pure KMnO4 weighing 0.561 g. was treated with excess of KI in acidic medium. Iodine liberated required 100 ml. of 0. 15 M of sodium thiosulphate solution for exact oxidation. What is the % of each in the mixture?

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