Combustion  [ENDORSED]

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Cassidy 1G
Posts: 54
Joined: Fri Sep 29, 2017 7:07 am


Postby Cassidy 1G » Sun Oct 08, 2017 8:09 pm

If we are given the chemical formula for a product of a reaction, such as butane, how do we find the chemical equation for its combustion?

Miranda 1J
Posts: 51
Joined: Fri Sep 29, 2017 7:06 am

Re: Combustion  [ENDORSED]

Postby Miranda 1J » Sun Oct 08, 2017 8:12 pm

All (complete) combustion questions are the same. For your equation you always start off with what you are burning (in this case butane) and you react it with oxygen. This always gives you carbon dioxide and water as products. If you had an incomplete combustion question then you'd have to add carbon monoxide to your products as well. Don't forget to balance stoichiometric coefficients! :)

Hope this helps!

Erik Khong 2E
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: Combustion

Postby Erik Khong 2E » Sun Oct 08, 2017 9:17 pm

Combustion always uses O2 from the atmosphere, so with butane, the equation would be something of the sort:

C4H10(g) + O2(g) --(delta for "heat")--> CO2(g) + H2O(l)

This equation is unbalanced, so don't forget to balance with stoichiometric coefficients!

sahiltelang-Discussion 1J
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: Combustion

Postby sahiltelang-Discussion 1J » Sun Oct 08, 2017 9:19 pm

for combustion chem equations- the hydrocarbon mostly reacts with oxygen to form water and carbon dioxide. if the original reactant contains nitrogen it will still react in the same manner but it will also give off nitrogen gas as a product.

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