What is the result of a reaction between sulfur trioxide and water?
- Correct Answer: sulfuric acid
- hydrochloric acid
- nitric acid
- acetic acid
Explanation: Sulfur trioxide gas reacts with water to form sulfuric acid. This is an unfortunately common reaction that occurs in the atmosphere in some places where oxides of sulfur are present as pollutants. The acid formed in the reaction falls to the ground as acid rain.
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