Final answer:
The final step in the formation of acidic aerosol is the reaction of sulfur trioxide with water.
Step-by-step explanation:
The final step in the formation of the acidic aerosol is the reaction of sulfur trioxide with water. Sulfur trioxide gas reacts with water to form sulfuric acid, as represented by the equation: SO3 + H2O → H2SO4. This reaction occurs in the atmosphere in some places where oxides of sulfur are present as pollutants, leading to the formation of acid rain.
he formation of acidic aerosol, often associated with acid rain, involves the reaction between sulfur trioxide and water. This reaction forms sulfuric acid according to the chemical equation: SO3 (g) + H2O (l) → H2SO4 (aq). Therefore, the correct answer is B: Reaction of sulfur trioxide with water.