Why does rainwater have pH less than 7?
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pH of rain water is about 5.6, because carbon dioxide reacts with it to form weak carbonic acid.
CO2 + H2O ⟶ H2CO3
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Explain the formation of acid rain due to:
(i) oxides of sulphur
(ii) oxides of nitrogen
What are the causes of acid rain?
pH of acid rain is sometimes as low as 2. Explain.
Give the impact of acid rain:
(i) on plants
(ii) on soil
(iii) on water bodies