Question

sulfur trioxide is a gas that reacts with liquid water to produce aqueous sulfuric acid, or acid rain. what is the equation for this reaction? note: you do not need to balance the equation.\\(\ce{so_3}(g) + \ce{h_2o}(g) \
ightarrow \ce{h_2so_4}(g)\\)\\(\ce{so_3}(g) + \ce{h_2o}(l) \
ightarrow \ce{h_2so_4}(aq)\\)\\(\ce{h_2so_4}(g) \
ightarrow \ce{so_3}(g) + \ce{h_2o}(l)\\)\\(\ce{s_3o}(g) \
ightarrow \ce{h_2so_4}(s) + \ce{h_2o}(l)\\)

Explanation:

1. Analyze reactants and products: The reaction is between sulfur trioxide ($\ce{SO_3}$) gas and liquid water ($\ce{H_2O(l)}$) to form aqueous sulfuric acid ($\ce{H_2SO_4(aq)}$).
2. Check states:

• First option: Water is gas ($\ce{H_2O(g)}$) and product is gas ($\ce{H_2SO_4(g)}$), incorrect.
• Second option: Reactants are $\ce{SO_3(g)}$ and $\ce{H_2O(l)}$, product is $\ce{H_2SO_4(aq)}$, matches the reaction description.
• Third option: Reaction is reversed (decomposition instead of combination), incorrect.
• Fourth option: Reactant formula ($\ce{S_3O}$) is wrong and product states are incorrect, also reaction direction is wrong.

Answer:

B. $\ce{SO_3(g) + H_2O(l) \to H_2SO_4(aq)}$