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2. Calculate the enthalpy for the reaction below at standard conditions using Appendix G in your textbook. [Report the answer to three sig fig, without unit labels, and using +/- signs to indicate if the reaction is endo- or exothermic.] 2 Al(s) + Fe2O3(s) --> Al2O3(s) + 2 Fe(s)

Substance AH (kJ mol-) AG; (kJ mol-1) Sº (JK-1 mol-2) aluminum 0 0 28.3 324.4 285.7 164.54 -531 -485 -321.7 Al(s) Al(g) Al3+

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