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November 27, 2014

Homework Help: Chem

Posted by Anonymous on Thursday, April 8, 2010 at 3:26pm.

Calculate delta H for the formation of one mole of N2O5 from the elements at 25 degrees C using the following data.
2H2 + O2 - 2H2O delta H = -571.6 kJ
N2O5 + H2O - 2HNO3 deltaH = -73.7 kJ
1/2N2 + 3/2O2 + 1/2H2 - HNO3 delta H = -174.1 kJ

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