Problem- 1 what is the standard gibbs free energy for this, Ask an Expert

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Problem- 1) What is the standard Gibbs free energy for this reaction?he chemical reaction that causes iron to rust in air is given by

4Fe+3O2?2Fe2O3

In which delta hrxn=-1648 kj and delta Srxn=-543.7j/k

2) What is the Gibbs free energy for this reaction at 3200 K? Assume that ?H and ?S do not change with temperature.

3) At what temperature Teq do the forward and reverse rusting reactions occur in equilibrium?

I need help for above question. Show each steps for the above problem.

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