Explain the following in detail.
Acid Rain.

Explanation

Acid rain :
`to` Acid rains are due to oxide of N.S and C.(`NO_(2),SO_(2)` and `CO_(2)`).
`to` These oxides dissolve in rain water and formed as acids. (`NHO_(3),H_(2)SO_(4)` and `H_(2)CO_(3)`).
`to` These come down to earth as rain and deposited on the earth.s surface .
`to` Acid - rain is more in industrial areas .
Chemical equations involved : -
`NO_(2) + NO_(3) to N_(2)O_(5)`
`N_(2)O_(5) + H_(2)O + 2HNO_(3)`
`CO_(2) + H_(2)O to H_(2)CO_(3)`
`SO_(3) + H_(2)O to H_(2)SO_(4)`
`to` The pH of acid rain is lessthan 5.6.
Acid rains are harmful because .
i) The life of old building will be considerable reduced.
ii) The pH of the soil changes affecting its fertility .
iii) Ammonium salts formed by acid rains can be seen as atmospheric haze.
iv) Ammonium salts in rain drops result in wet decomposition .
v) Acid rains aer harmful to agriculture , trees , plants etc.
(vi) Due to acid rains aquatic life disturbed.
vii) Due to acid rains the historical monumnets like Tajmahal are damaged .