name two gaseous components of air which do not support combustion or burning
Answers
Answer:
The various components found in the air are nitrogen, oxygen, helium, xenon, hydrogen, neon, krypton, carbon dioxide, water vapour and dust particles. The gaseous components which do not support combustion are carbon dioxide and nitrogen.
Explanation:
What are two gases that do not support combustion?
It is perhaps better to list the gases which do support combustion: oxygen (of course), ozone but also fluorine, chlorine, bromine vapor. Nitrogen and carbon dioxide support the combustion of some metals, particularly in the form of small particles and at higher temperature. Magnesium burns more fiercely in carbon dioxide than in air, so a CO2 extinguisher is not merely useless, but fire promoting. Magnesium can also burn in steam.
Mixtures that do not contain any of the above will generally not support combustion. Thus, for example, things will not burn in an atmosphere of pure hydrogen or methane, though these are combustible gases. This fact is of great importance in industrial safety. For example, even if there was a spark inside a pipe containing methane it would not burn. It is only if it was somehow mixed with air, that combustion would occur.
Thus most gases in the absence of oxygen and the others mentioned above.
If this is a homework question, I suppose the expected answer would be two of the noble gases, and probably nitrogen, though (as mentioned above) some metals can burn in nitrogen.
carbon dioxide and nitrogen
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