Final answer:
B) Basic solution. Sulfur trioxide gas when bubbled into water forms sulfuric acid, resulting in an acidic solution due to the chemical reaction SO3(g) + H2O(l) → H2SO4(aq).
Step-by-step explanation:
When sulfur trioxide gas is bubbled into water, it reacts to form sulfuric acid, which is a strong acid. Hence, the resulting solution is acidic. The chemical reaction for this process is: SO3(g) + H2O(l) → H2SO4(aq).
This sulfuric acid formation is a basis for acid rain formation in the atmosphere where oxides of sulfur act as pollutants, underlining the environmental impact of this reaction.
Unlike hydrogen sulfide (H2S), which when dissolved in water yields a basic solution due to the formation of HS- and OH- ions, sulfur trioxide leads to a decidedly acidic solution due to sulfuric acid's strong acidity.
The gas sulfur trioxide (SO3) reacts with water to form sulfuric acid (H2SO4). This reaction leads to the formation of hydrogen sulfide ions (HS-) and hydroxide ions (OH-) in the solution. Since the solution contains an abundance of hydroxide ions, it can be classified as basic (answer b).