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Under basic conditions, the correctly balanced redox reaction for
PO33-(aq) + MnO4-(aq) PO43-(aq) + MnO2(s) is:
3PO33-(aq) + 2MnO4-(aq) + H2O(l) 3PO43-(aq) + 2MnO2(s) + 2OH-(aq)
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