Which reaction accounts for the fact that the pH of rain is naturally slightly acidic? A)CO₂ + H₂O $\rarr$ H⁺ + HCO₃¯ B)SO₃ + H₂O $\rarr$ 2 H⁺ + SO₄^2¯ C)Ca²⁺ + CO₂ + H₂O $\rarr$ CaCO₃ + 2 H⁺ D)NO₂ + H₂O $\rarr$2 H⁺ + NO₃¯

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The reaction that accounts for the fact that the pH of rain is naturally slightly acidic is:CO₂ + H₂O $\rarr$ H⁺ + HCO₃¯This reaction is the dissolution of carbon dioxide in water, which forms carbonic acid (H₂CO₃). Carbonic acid is a weak acid, so it only partially dissociates in water, producing hydrogen ions (H⁺) and bicarbonate ions (HCO₃¯). The hydrogen ions lower the pH of the water, making it slightly acidic.

Which Reaction Accounts for the Fact That the PH of Rain