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April 20, 2014

Homework Help: Chemistry

Posted by Gabby on Wednesday, November 14, 2012 at 4:24pm.

Calculate delta H for the reaction below using Hess's Law:

C2H6 ---> C2H2 + 2H2
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C2H2 + 5/2O2 --> 2CO2 + H2O (H = -1300 kJ)
2H2 + O2 --> 2H2O (H= -572 kJ)
2C2H6 + 7O2 --> 4CO2 + 6H2O (H= -3120 kJ)

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