Sulfur trioxide is formed when sulfur dioxide reacts with water in the air.
Common name:
Sulfite
Layman's explanation:
Most of the time sulfur compounds refer to sulfur dioxide (SO2) or sulfuric acid (H2SO4). SO3 is actually formed when SO2 combines with water. When SO3 then reacts with water, it produces H2SO4, this process is signified by the white fumes that are given off when the SO3 takes up water. Sulfur trioxide is found in three forms: a colorless liquid is its most common form, but it also exists as a crystal or gas. Sulfur trioxide has mostly the same hazards as sulfuric acid. The most common hazard is that it burns the skin. The most common use for SO3 in the environment is in the production of sulfuric acid and in explosives.
Miscellaneous comments:
The Sulfite ion presented is part of a larger structure where sulfite was coordinated in a chelating fashion, IJAFAA,
A.Garcia-Granados, M.C.Gutierrez, F.Rivas Org.Biomol.Chem. , 1, 2314, 2003
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