Name the oxide of sulphur which reacts with water to give sulphuric acid.
SO2
SO3
SO
S2O
Sulphur trioxide reacts with water to give sulphuric acid.
SO3+H2O→H2SO4
Name the oxide of sulphur which reacts with water to give sulphuric acid. In the contact process, the direct reaction between oxide of sulphur and water is avoided. In this process, what does the oxide of sulphur react with instead of water, and what is the name of the product?