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Air And Atmosphere (common atmospheric pollutants (carbon monoxide (CO)…
Air And Atmosphere
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composition of air
78% nitrogen, 21% oxygen, 1% other gases (0.97% nobel gases, mostly argon, 0.03% carbon dioxide.
separation of air
air is a mixture of gases. to separate air into its constituent gases, we use fractional distillation, this method allows gases to be separated based on the different boiling points of the gases.
atmosphere
the earth is surrounded by a layer of air called 'atmosphere'. the atmosphere acts as a blanket to protect the earth from excessive radiation from the sun and maintain earth's temperature.
acid rain
acid rain in formed when acidic air pollutants such as sulfur dioxide and nitrogen dioxide dissolve in rainwater.
acid rain reacts with metals and with carbonates in marble and limestone. when this happens, metal bridge and stop buildings are damaged. acid rain can reduce the PH value of natural water bodies below PH 4, which will kill fishes and other aquatic life. acid rain also leaches important nutrients from the soil and destroy plants.