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Calculate the temperature at which it is thermodynamically possible for C (s) to reduce iron(III) oxide by the reaction:

2Fe2O3 (s) + 3 C (s) ---> 4Fe (s) + 3CO2

I don't need a specific answer, but I'm not sure how to approach the problem.

I'm assuming it has to do with substituting values in of the reaction into the change in free energy equals the change in enthalpy minus (temperature * change in entropy). Would it be the temperature when the reaction is negative AKA spontaneous

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