Sulfur Trioxide

Sulfur trioxide (also spelled sulphur trioxide) is the chemical compound with the formula SO3. In the gaseous form, this species is a significant pollutant, being the primary agent in acid rain. It is prepared on massive scales as a precursor to sulfuric acid.

Read more about Sulfur TrioxideStructure and Bonding, Chemical Reactions, Preparation, Structure of Solid SO3, Application, Safety, Sources

Other articles related to "sulfur trioxide, sulfur":

Sulfur Trioxide Pyridine Complex
... Sulfur trioxide pyridine complex is the compound with the formula C5H5NSO3 ... adduct formed from the Lewis base pyridine and the Lewis acid sulfur trioxide ... The compound is mainly used as a source of sulfur trioxide, for example in the synthesis of sulfate esters from alcohols ROH + C5H5NSO3 → +- It is also an ...
Sulfuric Acid - Manufacture - Contact Process
... In the first step, sulfur is burned to produce sulfur dioxide ... S (s) + O2 (g) → SO2 (g) This is then oxidized to sulfur trioxide using oxygen in the presence of a vanadium(V) oxide catalyst ... This reaction is reversible and the formation of the sulfur trioxide is exothermic ...
Oleum
... oil"), or fuming sulfuric acid refers to a solution of various compositions of sulfur trioxide in sulfuric acid, or sometimes more specifically to disulfuric acid (al ... the formula ySO3.H2O where y is the total molar sulfur trioxide content ... can also be described by the formula H2SO4.xSO3 where x is now defined as the molar free sulfur trioxide content ...
Occurrence - Extraterrestrial Sulfuric Acid - Venus
... photochemical action on carbon dioxide, sulfur dioxide, and water vapor ... When it reacts with sulfur dioxide, a trace component of the Venusian atmosphere, the result is sulfur trioxide, which can combine with water vapor, another trace ... temperatures above 300 °C, sulfuric acid begins to decompose into sulfur trioxide and water, both in the gas phase ...