Balancing Redox Equations in Base
Balance the reaction between permanganate ion and oxalate
ion to form carbonate ion and solid manganese dioxide in basic solution.
MnO4-(aq) + C2O42-(aq) MnO2 (s) + CO32-(aq)
1) Divide into half-reactions: (reduction)
MnO4- MnO2
2) Balance
a) Atoms other than O and H
b) O atoms with water
c) H atoms with H+
d) Charge with e-
Not needed
MnO4- MnO2 + 2 H2O
4 H+ + MnO4- MnO2 + 2 H2O
3 e- + 4 H+ + MnO4- MnO2 + 2 H2O
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