Which of the following takes place during the formation of acid rain?

Burning of fossil fuels which releases

{S O}_{2}

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Reaction of

{S O}_{2}

with water vapour to form sulphurous acid

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Oxidation of

{S O}_{2}

{S O}_{3}

which reacts with water vapour forming sulphuric acid

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All of the above

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Solution

The correct option is C All of the above
Formation of acid rain:
Burning of fossil fuels which releases ${S O}_{2}$ .
${S O}_{2}$ reacts with water vapour to form sulphurous acid.
${S O}_{2}$ can also be oxidized to ${S O}_{3}$ by reacting with $O_{2}$ .
${S O}_{3}$ reacts with water vapour forming sulphuric acid.

Option D is correct.

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Similar questions

S O_{2}

H_{2} S

S O_{2}

Inorganic oxides of sulphur, nitrogen, etc. react with water vapour in the atmosphere to form weak inorganic acids leading to acid rain.

S + O_{2} \to S O_{2}; Δ H = - 398.2 k J; S O_{2} + \frac{1}{2} O_{2} \to S O_{3}; Δ H = - 98.7 k J

S O_{2} + 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

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