J.R. S. answered 07/22/17
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
First, just to set the record straight. It should be iron(III) oxide, and no need for the 2 in front of Al, until you balance the equation. So, the balanced equation would be:
Fe2O3 + Al ==> 2Fe + Al2O3
The temperature will be approximately 784ºC or about 1443ºF
To answer your question, you would first convert the mass of each reactant to moles, using the respective molar masses. Then calculate the moles of product formed based on the mole ratio of products to reactants. Then calculate ∆H from
∆H = Σ∆H products - Σ∆H reactants.
Next use a similar procedure and calculate ∆S and ∆G of reaction.
Once you have ∆H, ∆S and ∆G, you can find the temperature from ∆G = ∆H - T∆S.
Or, you can simply look up the answer at http://chemistry-reference.com/reaction.asp?rxnnum=32