What is the equation for the reaction of acid rain with limestone?

The reaction of acid rain with limestone primarily involves the interaction of sulfuric acid, a common component of acid rain, with calcium carbonate, which is the main constituent of limestone. The correct equation illustrates this process accurately.

In the chosen equation, calcium carbonate (CaCO₃) reacts with sulfuric acid (H₂SO₄) to produce calcium sulfate (CaSO₄), carbon dioxide (CO₂), and water (H₂O). This reaction demonstrates the neutralization of the acid by the carbonate, resulting in the formation of calcium sulfate, which is soluble in water, and the release of carbon dioxide gas. The effervescence seen during the reaction is due to the production of CO₂, which can be observed as bubbles.

This interaction is significant in environmental chemistry, as acid rain can lead to the deterioration of limestone structures and geological formations, impacting landscapes and human-made constructions. The other reactions listed do not relate to the interaction of acid rain with limestone specifically. Therefore, the equation correlating with the reaction involves the correct reactants and products associated with limestone and sulfuric acid.