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Change in Free Energy: Combustion

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Calculate change in Gdegree for the combustion of ethanol vapor, C2H5OH(g), at 750degree C in oxygen to form carbon dioxide and water vapor. The following data is valid at 25 degree C:
Changein H degree(KJ/mol) change in Gdegree(KJ/mol)
C2H5OH(g) -234.8 -167.9
O2(g) 0 0
H20(g) -241.8 -228.6
C02(g) -393.5 -394.4

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The solution provides a calculation for finding the change in free energy for the combustion of ethanol vapour.

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