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How do i work out delta H for the combustion reaction of ethanol?

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i know the equation but then how to work out the delta H ?

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  1. deltaHreaction=deltaHfproducts-deltaHfre...

    DeltaHf values can be looked up from tables in any good chemistry handbook.


  2. You need the enthalpies of formation Hf of every compound. Note:elements like O2 have a zero enthalpy

    The calculate: Hc= 2*Hf(CO2)+ 3 Hf(H2O)-Hf(C2H5OH)
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