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Topic: Help me pleace  (Read 2380 times)

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Offline polky91

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Help me pleace
« on: January 11, 2010, 11:23:53 AM »
please help I have a big problem. Who can tell me the combustion reaction that occurs between nitrous oxide and acetylene?

Could you please calculate the difference in enthalpy of this reaction?
« Last Edit: January 11, 2010, 11:51:14 AM by polky91 »

Offline cpncoop

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Re: Help me pleace
« Reply #1 on: January 11, 2010, 11:45:46 AM »
Acetylene is CHCH (triple bonded), Nitrous oxide is N2O. The reaction would be:

CHCH + 5 N2O   ---->   2 CO2 + H2O + 5 N2

People burn things with nitrous oxide because it actually has a higher percentage of oxygen present than natural air.  The oxidation reaction is the same though... oxygen adds to the fuel (in this case aceylene) to form CO2 and H2O.

This is a simplified picture, because in true combustion, there are alot of side products.

Offline savy2020

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Re: Help me pleace
« Reply #2 on: January 11, 2010, 05:17:48 PM »
Entalpy of the reaction isn't hard to find if you had bond-energies or heats of formation etc. What more info is given to find enthalpy of reaction?
:-) SKS

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