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If equal solutions of 0.1M KMnO4 and 0.1M K2Cr2O7 solutions are allowed to oxidize Fe(2+) to Fe (3+) in acidic medium, then Fe2+ Will be: a) more by KMnO4 b)more by K2Cr2O7 c)equal in both cases
From MnO4-MnO4- + Fe2+ ----> Fe3+ + Mn2+n1 * 5 = n2 * 1(0.1V)*5 = n2n2 = 0.5V From K2Cr2O7,Cr2O7^2- + Fe2+ --------> Fe3+ + Cr3+n0 * 4 = n2 * 1(0.1V)*4 = n2n2 =0.4VComparing both moles that is n2,Fe^2+ would be more by KMnO4.
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