1. (a) Explain with an equation why normal rainwater is acidic because it dissolves CO2 from the atmosphere.
2. (b) Formulate equations to show how sulfur dioxide released into the atmosphere can be oxidized to sulfur trioxide, which then dissolves in water to form sulfuric acid.
3. (c) Suggest why adding lime, calcium oxide, to stream water may help to reduce the effects of acid rain.