120. Solving a chemistry problem

120. Solving a chemistry problem

KJ was added to 40.0 ml of KMnO4 solution (1.0 ml of KMnO4 is equivalent to 0.0050 g of iron) and the released iodine was titrated with 35.90 ml of Na2S2O3 solution. Calculate the titer of the Na2S2O3 solution for copper.

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