16. Решение задачки по химии №14

1. A 1.300 g sample of oxalic acid dihydrate contaminated with impurities was dissolved in a 100 ml flask. 20.0 ml of a 0.0065 mol/l KMnO4 solution were used to titrate 10.0 ml of the resulting solution in an acidic medium. Calculate the mass fraction of the main substance in the sample.

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