Line 1: |
Line 1: |
| [[File:lighterstill.jpg]][[File:Combustion.jpg|right|frame]] | | [[File:lighterstill.jpg]][[File:Combustion.jpg|right|frame]] |
| | | |
− | *Date: [http://www.wikipedia.org/wiki/15th_Century 15th century] | + | *Date: [https://www.wikipedia.org/wiki/15th_Century 15th century] |
| ==Definitions== | | ==Definitions== |
| *1 : an [[act]] or instance of burning | | *1 : an [[act]] or instance of burning |
Line 7: |
Line 7: |
| *3 : [[violent]] agitation : tumult | | *3 : [[violent]] agitation : tumult |
| ==Description== | | ==Description== |
− | '''Combustion''' or burning is the [[sequence]] of [http://en.wikipedia.org/wiki/Exothermic exothermic] [[chemical]] [[reactions]] between a fuel and an oxidant accompanied by the production of [[heat]] and [[conversion]] of [[chemical]] [[species]]. The release of [[heat]] can result in the production of [[light]] in the form of either [[glowing]] or a [[flame]]. Fuels of interest often include organic compounds (especially hydrocarbons) in the [[gas]], [[liquid]] or [[solid]] [[phase]]. | + | '''Combustion''' or burning is the [[sequence]] of [https://en.wikipedia.org/wiki/Exothermic exothermic] [[chemical]] [[reactions]] between a fuel and an oxidant accompanied by the production of [[heat]] and [[conversion]] of [[chemical]] [[species]]. The release of [[heat]] can result in the production of [[light]] in the form of either [[glowing]] or a [[flame]]. Fuels of interest often include organic compounds (especially hydrocarbons) in the [[gas]], [[liquid]] or [[solid]] [[phase]]. |
| | | |
− | In a complete combustion [[reaction]], a compound reacts with an oxidizing [[element]], such as [http://en.wikipedia.org/wiki/Oxygen oxygen] or [http://en.wikipedia.org/wiki/Fluorine fluorine], and the products are compounds of each [[element]] in the fuel with the oxidizing element. For example: | + | In a complete combustion [[reaction]], a compound reacts with an oxidizing [[element]], such as [https://en.wikipedia.org/wiki/Oxygen oxygen] or [https://en.wikipedia.org/wiki/Fluorine fluorine], and the products are compounds of each [[element]] in the fuel with the oxidizing element. For example: |
| | | |
| :CH4 + 2O2 → CO2 + 2H2O + [[energy]] | | :CH4 + 2O2 → CO2 + 2H2O + [[energy]] |
| :CH2S + 6F2 → CF4 + 2HF + SF6 | | :CH2S + 6F2 → CF4 + 2HF + SF6 |
| | | |
− | A simple example can be seen in the combustion of [http://en.wikipedia.org/wiki/Hydrogen hydrogen] and [http://en.wikipedia.org/wiki/Oxygen oxygen], which is a commonly used [[reaction]] in [http://en.wikipedia.org/wiki/Rocket_engines rocket engines]: | + | A simple example can be seen in the combustion of [https://en.wikipedia.org/wiki/Hydrogen hydrogen] and [https://en.wikipedia.org/wiki/Oxygen oxygen], which is a commonly used [[reaction]] in [https://en.wikipedia.org/wiki/Rocket_engines rocket engines]: |
| | | |
| :2H2 + O2 → 2H2O(g) + [[heat]] | | :2H2 + O2 → 2H2O(g) + [[heat]] |
Line 20: |
Line 20: |
| The result is [[water]] vapor. | | The result is [[water]] vapor. |
| | | |
− | Complete combustion is almost impossible to [[achieve]]. In [[reality]], as [[actual]] combustion [[reactions]] come to [[equilibrium]], a wide variety of major and minor species will be present such as [http://en.wikipedia.org/wiki/Carbon_monoxide carbon monoxide] and pure [http://en.wikipedia.org/wiki/Carbon carbon] (soot or ash). Additionally, any combustion in [[air]], which is 78% [http://en.wikipedia.org/wiki/Nitrogen nitrogen], will also create several forms of [http://en.wikipedia.org/wiki/Nitrogen_oxides nitrogen oxides].[http://en.wikipedia.org/wiki/Combustion] | + | Complete combustion is almost impossible to [[achieve]]. In [[reality]], as [[actual]] combustion [[reactions]] come to [[equilibrium]], a wide variety of major and minor species will be present such as [https://en.wikipedia.org/wiki/Carbon_monoxide carbon monoxide] and pure [https://en.wikipedia.org/wiki/Carbon carbon] (soot or ash). Additionally, any combustion in [[air]], which is 78% [https://en.wikipedia.org/wiki/Nitrogen nitrogen], will also create several forms of [https://en.wikipedia.org/wiki/Nitrogen_oxides nitrogen oxides].[https://en.wikipedia.org/wiki/Combustion] |
| | | |
| [[Category: Chemistry]] | | [[Category: Chemistry]] |