Question

Is ${\mathrm{SO}}_3$ soluble in water?

Answer 1

Explanation:

1. Sulfur trioxide (${\mathrm{SO}}_3$) dissolves and interacts with water to generate an aqueous solution of sulfuric acid (${\mathrm{H}}_2{\mathrm{SO}}_4$).
2. The reaction is quite exothermic, thus they shouldn't dump the ${\mathrm{SO}}_3$ in clean water.
3. From the above discussion it is clear that sulfur trioxide is water-soluble.

Hence, ${\mathrm{SO}}_3$ is water soluble.