Homework Help: Chemistry

Posted by Kim on Sunday, May 23, 2010 at 9:53pm.

Calculate the enthalpy change (delta H) in kJ for the following reaction.

2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s)

use enthalpy changes for the combustion of aluminum and iron.

2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ

2Fe(s) + 3/2 O2(g) ==> Fe2O3 (s) Delta H: -824.2 kJ

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