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Combustion

Posted: Thu Oct 05, 2017 6:20 pm
by Emma Li 2C
I know combustion reactions require oxygen, but I was just wondering if combustion only occurs if the reactant has both carbon and hydrogen?
Is this reaction in L.7 combustion?
2 C57H110O6 + 163 O2 ->114 CO2 + 110 H2O

Thank you!

Re: Combustion  [ENDORSED]

Posted: Thu Oct 05, 2017 6:23 pm
by Chem_Mod
The reaction indicated is a combustion reaction indeed! By burning organic compounds, we always get CO2, H2O, and sometimes even N2 (depending on the initial composition of your material)! Usually the question itself would hit that it is a combustion reaction!

Re: Combustion

Posted: Thu Oct 05, 2017 6:27 pm
by Sophia Kim 1C
I'm pretty sure that both Carbon and Hydrogen are required since both H20 and Co2 need to be products for the equation to be a combustion. So the equation you sent is a combustion since it fulfills both requirements! I hope that answered your question!

Re: Combustion

Posted: Thu Oct 05, 2017 8:04 pm
by Michelle Lu 1F
Yes that is a combustion reaction! What a combustion reaction consists of is some form of a hydrocarbon reacting with gaseous O2 to result in water and carbon dioxide, and the equation you posted above matches this definition. You do need both carbon and hydrogen among the reactants (hydrocarbon and O2) in order for the creation of the products CO2 and H2O to be possible.

Re: Combustion

Posted: Fri Oct 06, 2017 12:22 am
by Sophie 1I
Yes, because there was a reaction with oxygen leading to the production of carbon dioxide and water!

Re: Combustion

Posted: Fri Oct 06, 2017 3:36 pm
by Rakhi Ratanjee 1D
In a combustion reaction, are the products of H2O and CO2 always in the gas form? Are there any instances in which they would be in liquid form? Also, is combustion always with gaseous 02?

Re: Combustion

Posted: Sat Oct 07, 2017 2:58 pm
by Christian Fulinara 3H
Rakhi Ratanjee 1B wrote:In a combustion reaction, are the products of H2O and CO2 always in the gas form? Are there any instances in which they would be in liquid form? Also, is combustion always with gaseous 02?


Sometimes an incomplete reaction occurs where there is insufficient oxygen in the reaction. The resulting products are water with soot(carbon) and/or carbon monoxide.