Chemical Reactions
SO3 is the anhydride of H2SO4. Thus, the following reaction occurs:
- SO3 (g) + H2O (l) → H2SO4 (aq) (−88 kJ mol−1)
The reaction occurs both rapidly and exothermically, too violently to be used in large-scale manufacturing. At or above 340 °C, sulfuric acid, sulfur trioxide, and water coexist in significant equilibrium concentrations.
Sulfur trioxide also reacts with sulfur dichloride to yield the useful reagent, thionyl chloride.
- SO3 + SCl2 → SOCl2 + SO2
SO3 is a strong Lewis acid readily forming crystalline complexes with pyridine, dioxane and trimethylamine which can be used as sulfonating agents.
Read more about this topic: Sulfur Trioxide
Famous quotes containing the words chemical and/or reactions:
“We are close to dead. There are faces and bodies like gorged maggots on the dance floor, on the highway, in the city, in the stadium; they are a host of chemical machines who swallow the product of chemical factories, aspirin, preservatives, stimulant, relaxant, and breathe out their chemical wastes into a polluted air. The sense of a long last night over civilization is back again.”
—Norman Mailer (b. 1923)
“Prolonged, indiscriminate reviewing of books is a quite exceptionally thankless, irritating and exhausting job. It not only involves praising trash but constantly inventing reactions towards books about which one has no spontaneous feeling whatever.”
—George Orwell (1903–1950)