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The calcium contained in a solution of 1...

The calcium contained in a solution of `1.048g` of a substance being analysed was precipitated with `25mL H_(2)C_(2)O_(4)`. The excess of `C_(2)O_(4)^(2-)` in one fourth of filrtate was back titrated with `5mL` of `0.1025N KMnO_(4)`. To determine the conc. of `H_(2)C_(2)O_(4)` soloution, it was diluted foru folds and titration of `25mL` of same `KmnO_(4)` solution. Calculate `%` of `Ca` in substance.

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The correct Answer is:
`14.94%`
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