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Question- Iron (III) was reduced to iron (II) by chromium (III) in acidic solution according to the following unbalanced equation:

Cr+3(aq) + Fe+3(aq) -> Fe+2(aq) chromium oxide compound (aq)

The experiment requires 66.9 g of Fe+3 to be completely reduced by 20.8 g of Cr+3. Based on this information, what is the oxidation state of the chromium in the chromium oxide product? What is the possible chromium oxide product?

A. CrO

B. CrO2

C. CrO2

D. Cr2O4+2

E. Cr2O7-2

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