The complete and balance the equation for the reaction, in basic solution, is written below:
[tex] 4OH^{-}(aq.)+ClO2^{-}(aq.)+4Fe^{3+}(aq.)-\ \textgreater \ ClO4^{-}(aq.)+4Fe^{2+}(aq.) + 2H_{2}O(l)[/tex]
In must be noted that, a redox reaction is said to be balance, when both charge and mass is balanced on both reactant and product side. In present case, net charge on reactant side is +7, which is same as product side. Hence, the reaction is both mass and charge balanced.
