Acid Rain(n)

WHAT IS ACID RAIN(n)?

• Generally, rain water(n) has a pH value(n) of(prep.) 5.6 because of the carbon dioxide(n) from air(n) dissolved(v) in it(pn).

• Any rainfall(n) has a pH value less than 5.6 is defined(v) as acid rain(n)

• When gas pollutants(n) e.g. sulphur dioxide, nitrogen dioxide dissolve(v) in(prep.) rain water(n), various acids(n) are formed(v).CO2 + H2O H2CO3 (carbonic acid)(n)SO2 + H2O H2SO3 (sulphorous acid)NO2 + H2O HNO2 (nitrous acid) +

HNO3 (nitric acid)

CAUSES OF ACID RAINSO2 : 70% NOx : 30%

X = 1 or 2

Formation(v) of Sulphuric Acid(n) (H2SO4)

2SO2(g) + O2(g) 2SO3(g)

SO3(g) + H2O(l) H2SO4(aq)

Formation(v) of Nitric Acid(n) (HNO3)2NO(g) + O2(g) 2NO2(g)

4NO2(g) + 2H2O(l) + O2(g) 4HNO3(aq)

FORMATION OF ACID RAIN

SO2

NOX

1.Vegetation(n)• Wash(v) away(av) essential(adj)

nutrients(n) ions from soil(n)• Poor(av) growth(v) of plants(n)

ENVIRONMENTAL PROBLEMS(n)

2.Aquatic Life(n)

• Inflow(v) of acidic(adj) water(n) containing(v) poisonous(adj) metal ions(n)

• Kill(v) the fish(n) and water plants(n)

3. Building(n)• Acid rain(n) attacks(v) the building

materials(n) and causes(v) corrosion(n).

BUCKLE UP FOR ACTIVITY…

YOU HAVE TO ANSWER EACH QUESTION WITHIN 15

SECONDS…!!!

1. What is an acid rain?

2.What is the main air pollutants for the formation of acid rain?

Question and Answer

3.What is the pH range for the acid rain?

4.What are the major sources of air pollutants?

5.What is the side effect of acid rain on plants?

6. What is the side effect of acid rain on marine life?

7. What is the side effect of acid rain on building material?

•Find out the parts of speech in the answers written by you.