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The neutralisation of a solution of 1.2 g of substance containing a mixture of H2C2O4.2H2O, KHC2O4.H2O and different impurities of neutral salt consumed 18.9 ml of 0.5N NaOH solution. On titration with KMnO4 solution, 0.4g of the same substance needed 21.55ml of 0.25 N KMnO4. Calculate percent composition of the solution.

The neutralisation  of a solution of 1.2 g of substance containing a mixture of H2C2O4.2H2O, KHC2O4.H2O and  different impurities of neutral salt consumed 18.9 ml of  0.5N NaOH solution. On titration with KMnO4 solution, 0.4g of the same  substance needed 21.55ml of  0.25  N KMnO4. Calculate percent composition  of the solution.

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