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Hailey Johnson
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Postby Hailey Johnson » Sun Feb 11, 2018 11:07 pm

In the solutions manual we write the reaction 4Fe3O4 + O2----> 6Fe2O3. Can someone explain why Fe3O4 is on the reactant side and not Fe2O3?

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Re: 9.81

Postby SantanaRodriguezDis1G » Sun Feb 11, 2018 11:39 pm

I was also wondering how you know to set up the equation in this manner

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Re: 9.81

Postby 404995677 » Mon Feb 12, 2018 1:01 am

It doesnt matter which is on the reactant or product side. If Fe3O4 was on the product side (6FeO3 --> 4 Fe3O4 + O2), the delta G would be +391.6 kJ/mol, thus it would mean the formation of Fe3O4 would not be spontaneous and the reaction would favor the reactants (Fe2O3).

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