How does carbon burn?

Answer 1

Carbon dioxide is released whenever a organism that was living decomposes. Whether by fire or through natural decomposition, the item will release carbon dioxide as it turns back into the basic elements that it was composed of.

Answer 2

Carbon dioxide is a non-flammable gas. It is the product of combustion itself.

Liquid CO2 can be combined with Hydrogen in a pressurized reactor to produce Carbon, Oxygen, and Water. 2H+CO2 = C+O+H2O.

This happens when CO2 is sequestered underground. The CO2 combines with H in the rocks and this reaction takes place naturally. However, very little work is being done to facilitate atmospheric engineering.

Addition from tdawgpbCarbon dioxide doesn't "burn" simply by adding heat to it. Combustion is the process of chain-reaction oxidation. Most combustion (for example, with organic materials) takes oxygen from the air and uses it to oxidize carbon atoms, producing CO2 (and H2O in organic compounds). However, with the correct substrate, it is possible to "burn" carbon dioxide by using it as the sourceof oxygen for oxidation (this reduces the carbon, and black carbon residue is a product of the combustion).

This is frequently done in chemistry demonstrations where magnesium is ignited and surrounded with dry ice (solid state CO2). This produces Magnesium Oxide (MgO) and carbon (C). MgO has slightly less free energy than CO2, making the reaction exothermic (and hence combusion possible), but it has a very high activation energy, mostly involved in the dissociation of CO2. Burning magnesium is quite hot and provides the necessary activation energy and will "burn" the CO2 if there is no O2 available (this is done by piling the dry ice on top of the burning magnesium, or a similar method).

Answer 3

In a complex, highly exothermic reaction with oxygen.

The activation energy must be sufficient for the carbon-carbon bonds to break, then reform with the oxygen to form CO2.

And that's burning in a nutshell.

Answer 4

when carbon burns in air it reacts with O2 gas to make CO2

Answer 5

in the presence of O2.well y should it burn?

Answer 6

While the combustion reaction takes place CO2 which is obtained just escapes immediately and mixes with the surrounding air...!!