Combustion Question

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Grace Ramey 2K
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Joined: Thu Jul 27, 2017 3:01 am

Combustion Question

Postby Grace Ramey 2K » Tue Oct 03, 2017 2:05 pm

Just a quick question about a trend I have noticed in some of the homework problems. Does combustion of a substance always result in the product of CO2 and water (among other compounds that correspond with elements in the reactants)?

Naana Boateng 1I
Posts: 58
Joined: Fri Sep 29, 2017 7:07 am

Re: Combustion Question

Postby Naana Boateng 1I » Tue Oct 03, 2017 2:31 pm

Yes, combustion (anything that burns or is burning) always has the product of carbon dioxide and water.

Jordan Foster
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Joined: Fri Sep 29, 2017 7:06 am

Re: Combustion Question

Postby Jordan Foster » Tue Oct 03, 2017 4:41 pm

Combustion reactions can have any number of products, depending on the reactants. The two products that are present in every combustion reaction are CO2 and H2O.

Lauren Seidl 1D
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Joined: Fri Sep 29, 2017 7:06 am

Re: Combustion Question

Postby Lauren Seidl 1D » Thu Oct 05, 2017 10:19 am

Yes, carbon dioxide and water vapor will always be produced in combustion, but depending on the reactants and due to conservation of mass, other products may be produced. In example H.19, nitrogen is one of the reactants, so it therefore must also be a product. That is why you would get carbon dioxide, water vapor, and nitrogen gas.

Brandon Fujii 1K
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Joined: Fri Sep 29, 2017 7:04 am

Re: Combustion Question

Postby Brandon Fujii 1K » Thu Oct 05, 2017 10:30 am

In addition, Oxygen must be present in order for a combustion reaction to occur. In most cases, Oxygen is in excess because it is found in the atmosphere. i.e. When we burn Butane in an outdoor barbecue, we have an excess Oxygen.

Prabhdeep-3L
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Joined: Sat Jul 22, 2017 3:00 am

Re: Combustion Question

Postby Prabhdeep-3L » Fri Oct 06, 2017 6:36 pm

Depending on the nature of reaction, I believe Energy and Carbon can also be products of combustion alongside Carbon Dioxide and Water!

For example, if you did an experiment with a burning candle. If you were to place a copper wire near the flame of the candle, the flame would go away. This is because the copper is conducting energy away from the flame. There would be evidence of Carbon if you were to place some sort of glass over the flame. Soot would collect on the glass; soot is the collection of free Carbon atoms that haven't been burned.

clairedisc3b
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Joined: Fri Sep 29, 2017 7:07 am

Re: Combustion Question

Postby clairedisc3b » Fri Oct 13, 2017 1:15 am

One thing to note though, is that the resulting water is actually water vapor, which previous replies have stated but i just wanted to make it clear. Thus both products, CO2 and H2O are in gaseous states

CalebBurns3L
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Joined: Fri Sep 29, 2017 7:07 am

Re: Combustion Question

Postby CalebBurns3L » Fri Nov 17, 2017 2:23 pm

A combustion reaction always results in the production of CO2 and H20 in gaseous form.

Isaiah Little 1A 14B
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Joined: Fri Sep 29, 2017 7:05 am

Re: Combustion Question

Postby Isaiah Little 1A 14B » Sat Nov 18, 2017 6:31 pm

For the sake of simplicity and this class, complete combustion always results in the production of gaseous H2O and CO2. In reality, combustion produces many other compounds, such as CO.

Gwen Peng 1L
Posts: 36
Joined: Sat Jul 22, 2017 3:01 am

Re: Combustion Question

Postby Gwen Peng 1L » Sun Nov 19, 2017 11:04 pm

Yes, in a combustion equation the reactants will always be whatever compound is burning and oxygen (O2) and the products will always be carbon dioxide (CO2) and water (H2O).


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