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Transcript of The Atmosphere
Contribution of Nitrogen, Oxygen and Carbon Dioxide to the Atmosphere
Laboratory and industrial preparation of Oxygen, Nitrogen and Carbon Dioxide
Oxygen & Nitrogen
The Composition of the Atmosphere
CaCO3(s) + 2HCl(aq) = CaCl2(aq) + H2O(l) + CO2(g)
Distillation of Liquid Air
Liquid air passes into the bottom of the column.
Warmer at bottom than the top.
Nitrogen and oxygen separate due to there boiling points.
The oxygen is further refined to remove all remaining elements.
Several layers of gases surrounding the earth.
Protects from UV-B radiation.
Retains heat through the green house effect.
Only closest layer has breathable air.
Makes up around 78% of the air we breath.
Nitrogen is essential for protiens and DNA.
Absorbed through nitrogen cycle.
Nitrogen's mass in the atmosphere increases the pressure.
To little Nitrogen means to much oxygen and would deem the air unbreathable.
Many methods of
Oxygen - most commonly Catalytic decomposition of Solid Potassium chloride or Hydrogen Peroxide.
Nitrogen- can be produced by heating a water solution of ammonium nitrite:
, usually electrolysis of dilute Sulphuric Acid or fractional distillation of liquid air.
Makes up 21% of the air we breath.
Essential for cellular respiration.
To much would cause combustion.
To little would cause asphyxiation.
Ozone, O3, protects from UV-B radiation.
Makes up ~0.04% of the air we breath.
Essential for photosynthesis and cellular respiration.
Essential for the Greenhouse Effect.
Come from volcanoes, burning fossil fuels, respiration etc.
Industrial revolution increased CO2 emissions.
CO2 is produced through combustion and respiration
Simplest method of manufacturing follows:
CO2 is also a by-product during the industrial manufacturing of Ammonia and Hydrogen.
H2O + NH4NO3 → N2 + 3H2O