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  • The acids present in acid rain are __________ (i) Peroxyacetylnitrate

The acids present in acid rain are _________.
(i) Peroxyacetylnitrate
(ii) H_{2}CO_{3}
(iii) HNO_{3}
(iv) H_{2}SO_{4}

Answers (1)

The answer is the option (ii) H_{2}CO_{3} (iii) HNO_{3} and (iv) H_{2}SO_{4}

Explanation: The pH of rainwater is 5.6 because of the presence of H+ ions; they are formed by the reaction of CO_{2} present in the atmosphere with rainwater

H_{2}O(l) + CO_{2}(g) \rightarrow H_{2}CO_{3}(aq)

H_{2}CO_{3}(aq) \rightarrow H^{+}(aq) +HCO_{3}(aq)

Acid rain is the one where the pH of rainwater drops below 5.6. Its major contributors are SO_{2} and NO_{2} after reaction and oxidation with rainwater,

2SO_{2}(g) + O_{2}(g) + 2H_{2}O(l) \rightarrow 2H_{2}SO_4(aq)

4NO_{2}(g) + O_{2}(g) + 2H_{2}O(l) \rightarrow 4HNO_{2}^{-}(aq)

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