acid rain greenhouse effect
TRANSCRIPT
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Acid Rain
• Acid rain refers to rain(or any precipitation i.e.
snow or fog) which is acidic in nature (has pH
less than 5.6)
• It is generally a complex mixture of-
sulphuric acid (H2SO
4) along
with sulphurous acid (H2SO
3)
and nitric acid(HNO3) along
with nitrous acid(HNO2)
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Causes Of Acid Rain
• Acid rain is caused by a chemical reaction
that begins when compounds like sulfur
dioxide and nitrogen oxides are released into
the air.
• These substances can rise very high into the
atmosphere, where they mix and react with
water, oxygen, and other chemicals to form
more acidic pollutants, known as acid rain.
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Natural Causes Of Acid Rain
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Natural Causes Of Acid Rain
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Man-made Causes Of Acid Rain
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Man-made Causes Of Acid Rain
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Chemical Process
Formation of Sulphurous Acid
• S+O2=SO
2
• SO2+H
2O=H
2SO
3
Formation of Sulphuric Acid
• 2SO2+O
2=2SO
3
• SO3+H
2O =H
2SO
4
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Chemical Process
Formation of Nitrous Acid and Nitric Acid
• N2+O
2=2NO
• H2O+2NO
2=HNO
2+HNO
3
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Effects Of Acid Rain
• Acid rain
damages the
leaves of
plants.
• It depletes the
fertility of the
soil.
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Effects Of Acid Rain
• It causes respiratory
problems to humans
and animals.
• It destroys marine life.
• It damages buildings
and stone statues
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Prevention
• Reduce coal use and increase the use of natural gas and renewable resources.
• If the need to burn coal is still necessary then the using a low-sulfur coal would be an alternative.
• Use an alternative energy source such as batteries, solar & wind power, electricity and the like.
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Greenhouse Effect
• The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is radiated in all directions.
• The main greenhouse gases are:
1. Water vapour
2. Chlorofluorocarbons
3. Methane
4. Carbon dioxide
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Methane
•Methane is a primary constituent of natural
gas .
•It absorbs outgoing heat radiation from the
earth , and thus combine to the green house
effect and so considered as a greenhouse gas .
•Methane remains in the atmosphere for
approximately 10 years.
•It is twenty times more effective in trapping
heat in comparison to carbon dioxide
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Effects Of Greenhouse Effect
• Melting of polar caps,
which endangers the
animals like polar bears
• Change in weather
pattern
• Droughts
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Prevention•Reduce carbon dioxide
emissions.
•Conserve electricity by
switching off the TV,
computer, radio and lights
whenever possible.
• Use compact fluorescent light
(CFL) bulbs, which can reduce
energy consumption by
approximately 60 percent, in
place of incandescent light bulbs.
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By :Ashrith N Shetty