InterviewSolution
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InterviewSolution
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For the redox reaction `MnO_(4)^(ө)+C_(2)O_(4)^(2-)+H^(o+)rarrMn^(2+)+CO_(2)+H_(2)O` the correct coefficients of the reactions for the balanced reaction areA. `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+)),(16,5,2):}`B. `{:(MnO_(4)^(-),C_(2)O_(4)^(2-), H^(+)),(2,5,16):}`C. `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+)),(2,16,5):}`D. `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+)),(5,16,2):}` |
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Answer» Correct Answer - B `MnO_(4)^(-) +5e^(-) rarr Mn^(2+)` ...(1) `underset(O)underset(||)underset(" C"-O^(-))underset(|)overset(O)overset(||)(" C"-O^(-))rarr 2CO_(2) +2e^(-)` multiplying (1) by 2 and (2) by 5 yo balance `e^(-)` `2MnO_(4)^(-) +5C_(2)O_(4)^(-2) rarr 2Mn^(+2) +10 CO_(2)` Only suitable choice is (b). |
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