0.31 gm of an ally Fe+ Cu was dissolved in excen dilute H_(2)SO_(4) an – InterviewSolution

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1.	0.31 gm of an ally Fe+ Cu was dissolved in excen dilute H_(2)SO_(4) and the solution was made up to100 ml . 20 ml of this soltin required 3 m of N/30 K_(2)Cr_(2)O_(7) solution for exact oxidation. The % purity (in closest value) of Fe in wire is ____________.
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