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10. Write balance chemical equation for reaction between H2O2 and MnO4 in acidic and basic medium. |
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Answer» The unbalanced redox equation is as follows:H2O2+MnO4−⟶O2+MnO2(basic)All atoms other than H and O are balanced.The oxidation number of MN changes from +7 to +4. The change in the oxidation number is 3.The oxidation number of O changes from -1 to 0. The change in the oxidation number per O atom is 1. The total change in oxidation number for 2 O atoms is 2.To balance the increase in the oxidation number with decrease in the oxidation number multiply MnO4− and MnO2 with 2 and multiply H2O2 and O2 with 3..3H2O2+2MnO4−⟶3O2+2MnO2(basic)To balance O atoms, add four WATER molecules on RHS.3H2O2+2MnO4−⟶3O2+2MnO2+4H2O(basic)To balance H atoms, add 2H+ on LHS.3H2O2+2MnO4−+2H+⟶3O2 |
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