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9287109
Unit 7: pH and Acid Rain
Descrição
wasley science 2016-17
Sem etiquetas
acid rain
ph
acid
environmenal science
9th grade
Mapa Mental por
Meredith W
, atualizado more than 1 year ago
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Meredith W
quase 7 anos atrás
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Resumo de Recurso
Unit 7: pH and Acid Rain
pH: how acidic something is
stands for: potential of Hydrogen
range: 0-14
only applies to liquids
basically (pun intended) only liquids that contain water
logarithmic: so extremity increases each time...
pH in the enviornment
ocean has had the exact same acidity level for millions of years...
acid rain formation
CO2 in atmosphere combines with water vapor (H20) to form H2CO3
rain is naturally somewhat acidic
considered "acid rain" when pH reaches below 5.5
SOx, NOx carried by wind, mix w/ water vapor when it condensates into clouds
NO, NO2 leads to NITRIC ACID (HNO3), part of acid rain
also N2O, which is a greenhouse gas, not a pollutant
SO, SO2, SO3, S2O2 lead to acid rain
SO3+H2O= Sulfuric Acid (H2SO4)
largely contributed to by coal (power plants)... more coal= more acid rain
ionization of water
ion= has charge
acid rain effects
doesn't effect humans: only NOx, SOx do
can release aluminum from soils: enters streams, lakes
plants like aluminum, animals in water don't
aquatic life sometimes sensitive; trout, frogs (breathe through skin...)
weathers rocks (limestone...)/ corrode metals
ex) unreadable tombstones
slowly eats away at automobile paint
slower growth/death to forrests
when trees don't grow as fast (cannot take in CO2, this effects the carbon cycle and contributes to climate change)
decreases visibility
acid rain solutions
decrease energy/don't use so much coal (lowers SOx)
or cleaner coal: baghouse filters, wet scrubbers
Anotações:
xpensive, and only make it a water problem rather than a water problem
reducing transportation lowers NOx
pH in acidic lakes can be increased by adding limestone (a base)
Anexos de mídia
P H Scale (image/png)
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