Calculate the standard enthalpy of the reaction, ΔH∘rxn, for the thermite reaction:
2Al (s) + Fe2O3 (s) →2Fe (s) + Al2O3 (s)
Elements in their standard state have an enthalpy of formation value of zero. The standard enthalpies of formation of Fe2O3 and Al2O3 are
ΔH∘f of Fe2O3 (s) = -825.5 kJ/molΔH∘f of Al2O3 (s) = -1675 kJ/mol
Express your answer to three significant figures and include the appropriate units.
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