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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: faye on July 23, 2004, 09:29:15 AM

Title: heat reaction
Post by: faye on July 23, 2004, 09:29:15 AM

What is the standard heat of reaction for the combustion of ethane to form carbon dioxide gas and water? What is the final balanced equation for the reaction?
standard heats of formation
C2H6 -84.68kJ
O2  0.0kJ
CO2  -393.5kJ
H2O  -285.8kJ
 :fishing1:

Title: Re: heat reaction
Post by: Donaldson Tan on July 27, 2004, 11:26:54 PM

least show that you've attempted the question before you post it here, in future.

C2H6 (g)  + (7/2)O2 (g) -> 2CO2 (g) + 3H2O (l)

dH = [2(-393.5) + 3(-285.8)] - [(-84.68) + (7/2)(0)]

Title: Re: heat reaction
Post by: faye on July 30, 2004, 03:11:40 PM

I figured it out before i got an answer, but thanks for trying. In the future I'll show my work too. It just seemed alot of typing atthe time.