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Oxidation states of Iron

2Fe(NH4)2(SO4)2*6H2O + 6K2C2O4 + H2O2 + H2SO4 ----

2K3[Fe(C2O4)3]*3H2O + 3K2SO4 + 2(NH4)2SO4 + 8H2O

I need to find the oxidation state of Iron in both the reagent side and product side of the equation.

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Recall that for a neutral compound the sum of the positive oxidation state and negative oxidation state must equal to zero.

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