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Question:

Complete the following chemical equation:(i)Cr2O72−+6Fe2++14H+→(ii)2CrO42−+2H+→(iii)2MnO4−+5C2O42−+16H+→

Solution:

(i)Cr2O72−+6Fe2++14H+→6Fe3++2Cr3++7H2O
(ii)2CrO42−+2H+→Cr2O72−+H2O
(iii)2MnO4−+5C2O42−+16H+→2Mn2++10CO2+8H2O