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Grade 11Physical Chemistry

The calcium contained in a solution of 1.048g of a substance being analysed was precipitated with 25 ml H2C2o4 . The excess of c2o4 in one fourth of filtrate was back titrated with 5ml of 0.1025N KMnO4 . To determine the conc. Of H2C2O4 solution it was diluted four folds and titration of 25ml of dilute solution used up 24.1ml of same KMnO4 solution. Calculate % of ca in substance.

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9 Years agoGrade 11
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5 Years ago
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