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Enthalpy of combustion of ethane

by nevada2012
Tags: combustion, enthalpy, ethane
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Apr17-12, 02:50 AM
P: 3
hey guys i am having a really hard time doing enthalpy problems,

i am trying to do this(its not an homework question)

Calculate the enthalpy of formation of ethane (C2H6) given that the enthalpy of combustion of ethane is
-2840kj. DeltaHfH2O(1) = -286 kg/mol Delta HfCO2 (g) =-394 kg/per

is the answer -206?

this is what i did

-286 X -2840/-394

if not can you please give me step by step
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Apr24-12, 04:40 AM
P: 83
shouln't you first write out the reaction-equation ??
I wonder which textbook you are using ??

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