Homework Help: Chemistry

Posted by Amber on Wednesday, November 21, 2012 at 11:03pm.

How much heat would be released by burning one gallon of octane? The density of octane is 0.703g/mL. 1 gallon= 3.79 liters.

Chemistry - DrBob222, Thursday, November 22, 2012 at 12:12am
2C8H18 + 25O2 ==> 16CO2 + 18H2O

Convert the 1 gallon to L, then use density to convert to grams.
dHrxn = (n*dHf CO2 + n*dHf H2O) - (dHfC8H18)

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