(a)(i)MnO−4+H2O+I−→2MnO2+2OH−+IO−3(ii)CrO2−4+2H+AcidpH<7→Cr2O2−7+H2O(iii)KMnO4Δ513K→K2MnO4+MnO2+O2(b)(i)2MnO−4+H2O+I−→2MnO2+2H2O−+IO−3(ii)2CrO2−3+2H+AcidpH<7→Cr2O2−7+H2O(iii)2KMnO4Δ513K→K2MnO4+MnO2+O2(c)(i)2MnO−4+H2O+I−→2MnO2+2OH−+IO−3(ii)2CrO2−4+2H+AcidpH<7→Cr2O2−7+H2O(iii)2KMnO4Δ513K→KMnO4+MnO+O2(D)(i)2MnO−4+H2O+I−→2MnO2+2OH−+IO−3(ii)2CrO2−4+2H+AcidpH<7→Cr2O2−7+H2O(iii)2KMnO4Δ513K→K2MnO4+MnO2+O2</span>