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Air Pollution

Oxide of sulp...

Question

Oxide of sulpur are part of acid rain. Represent phenomenon of acid rain by chemical reaction ?

A

S O_{2} + H_{2} O r a i n ⟶ H_{2} S O_{3} a c i d r a i n

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B

S O_{2} + H_{2} O r a i n ⟶ H_{2} S O_{4} a c i d r a i n

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C

S O_{3} + H_{2} O r a i n ⟶ H_{2} S O_{4} a c i d r a i n

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D

S O_{3} + H_{2} O r a i n ⟶ H_{2} S O_{3} a c i d r a i n

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Solution

The correct options are
A $S O_{2} + H_{2} O r a i n ⟶ H_{2} S O_{3} a c i d r a i n$
D $S O_{3} + H_{2} O r a i n ⟶ H_{2} S O_{4} a c i d r a i n$
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure.

Chemical processes:
Combustion of fuels produces sulfur dioxide and nitric oxides. They are converted into sulfuric acid and nitric acid

Gas phase chemistry:
$S O_{2} + O H^{-} \to H O S O_{2}$
$H O S O_{2} + O_{2} \to H O_{2} + S O_{3}$
$S O_{3} + H_{2} O \to H_{2} S O_{4}$
$N O_{2} + O H^{-} \to H N O_{3}$
Hence options A & C are correct.

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Similar questions

Q. Complete the following reaction that aids in the formation of acid rain.
+ [O]+H2O→H2SO4

S + O_{2} ⟶ S O_{2}

Δ H = - 398.2 k J

S O_{2} + \frac{1}{2} O_{2} ⟶ S O_{3}

Δ H = - 98.7 k J

S O_{3} + H_{2} O ⟶ H_{2} S O_{4}

Δ H = - 130.2 k J

H_{2} + \frac{1}{2} O_{2} ⟶ H_{2} O

Δ H = - 227.3 k J

The enthalpy of formation of sulphuric acid at

298 K

S O_{2}

is known to produce acid rain.

Q. In acid rain,

S O_{2}

, sulphuric acid accounts for

S + O_{2} \to S O_{2}; Δ H = - 298.2 k J

S O_{2} + \frac{1}{2} O_{2} \to S O_{3}; Δ H = - 98.7 k J

S O_{3} + H_{2} O \to H_{2} S O_{4}; Δ H = - 130.2 k J

H_{2} + \frac{1}{2} O_{2} \to H_{2} O; Δ H = - 227.3 k J

the enthalpy of formation of

H_{2} S O_{4}

298

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