صفحه 1:
صفحه 2:
Name Student ID Responsibility
Kwok Wan Wan 99086250 -cortent
-techrical support
Lui Ching Lam 99243090 -editor
-conte nt
Mok Hei Man 99200420 -editor
-visual design
Ng Wai Han 99242910 -irformationsearch
-techrical support
Soo May Kei 99200750 -irformationsearch
-conte nt
صفحه 3:
Target audience:
* £.5 chemistry students
° Averageability
Pvorposes:
* Introduce acidrain by lecturing
* Provide Q&A section for uation
صفحه 4:
2 7
° Generally, rainwater hasapHvalue
of 5.6 because of the carbon dioxide
fromair dissolvedinit
* Anyrainfall hasapHvaluelessthan
5.6is definedasacidrain
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9
Hioxide, nitrogen dioxidedissolvein
rainwater,various acids are formed.
CO,+Wz0 > ین (cerboxir anid)
وله نینط فد میا +60
wid)
@MO,+WZ0 > ~~ WOOS (citer arid) +
WOO, (site
wid)
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of) CAUSES OF ACID RAIN
O.: I% 0 : 0
۳ X= dere
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©
—_#£60,,(u) م0 + (م900
)09( ۱
Formation f Mirvric Acta GINO,)
9000) + ۵۵0 9000)(
> )0۵۵ + () م9۳ + (مو۳00۵؟
€LOO, (sa)
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صفحه 9:
ENVIRONMENTAL
PROBLEMS
4. Vegetation
* Washawayessential nutrientsionsfrom
soil
* Poor growthof plants
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DAGuaticLife
° Inflow of acidicwater containing
poisonous metal ions
° Kill thefishandwater plants
1
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2. Building
* Acidrainattacks the building
materialsandcauses corrosion.
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2 تن جماعصوه
1. Whatisanacidrain?
Answer AT
2.What isthemain air pollutants for
theformation of acidrain?
Answer
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3.WhatisthepH rangefor theacidrain?
200 NEUTRAL ALKALINE
i
4. What are themajor sources of air
pollutants?
i
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5. What isthe side effect ofacidrainon
plants?
i
6. What isthe side effect ofacidrainon
marinelife?
Answer
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صفحه 16:
2 On-Line References
° fittp://igc.apc.org/acidrain/
* Attp://beakman.com/acid/acid.fitml
* Attp://qlink.queensu.ca/~¥0rm4/
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ap و
1. AcidRainis rainwater withpH
valuelessthan 6. Thisisthe rainfall
withacidity Cevel beyondwhat is
expectedinunpolluted rainfall
2.Themainairpollutantsare sulphur
Hioxideand nitrogen dioxide.
sO, NO,
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Answer
3.Theunpolluted rainwater is slightly
acidic withpH about 5.6 because carbon
dioxidein theair dissolvesin rainwater to
formaweakacid. So,the pH of acidrain
water isbelow 5.6.
NEUTRAL ALKALINE = ممم
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Auswer
4. Themajor sources weremotor vehicles,
factoriesandpower stations.
5.Acidrainmakes soils become acidic.
When the soil becomes acidic, theplant
will not grow well.
/
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Answer
6. Whenacidrainrunsinto rivers or
Cakes, thepH value of water will goes
down below 5.Theaquaticlifein water
may die because of this.
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Answer
7.Most buildingmaterials made of
Cimestoneandmarble. Theacidrain
watermainly sulphuricacidwill
react withcalciumcarbonatefrom
Cimestoneandmarbletoformcalcium
sulphate.
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