Homework Help: chem 101

Posted by Anonymous on Wednesday, April 11, 2012 at 3:37pm.

Determine the heat of combustion of ethyl alcohol
(C2H6O).
the right answer is -1238.43 kj/mol. Help with process thank you

chem 101 - DrBob222, Wednesday, April 11, 2012 at 5:08pm
2C2H6O + 6O2 ==> 4CO2 + 6H2O
heat comb = (n*dHf CO2 + n*dHf H2O) - (2*dHf ethanol) = ?
dHf = heat formation = delta Hf. These are in the appendix in your text/notes.

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