Search results
Results from the WOW.Com Content Network
Sulfur oxide refers to many types of sulfur and oxygen containing compounds such as SO, SO 2, SO 3, S 7 O 2, S 6 O 2, S 2 O 2, etc. Sulfur oxide (SO x) refers to one or more of the following: Lower sulfur oxides (S n O, S 7 O 2 and S 6 O 2) Sulfur monoxide (SO) and its dimer, Disulfur dioxide (S 2 O 2) Sulfur dioxide (SO 2) Sulfur trioxide (SO 3)
Sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid. Sulfur dioxide for this purpose is made when sulfur combines with oxygen. The method of converting sulfur dioxide to sulfuric acid is called the contact process. Several million tons are ...
The sulfur dioxide then oxidized to sulfur trioxide using oxygen with vanadium(V) oxide as catalyst. 2 SO 2 + O 2 ⇌ 2 SO 3 (−198 kJ/mol) (reaction is reversible) The sulfur trioxide is hydrated into sulfuric acid H 2 SO 4: SO 3 + H 2 O → H 2 SO 4 (g) (−101 kJ/mol) The last step is the condensation of the sulfuric acid to liquid 97–98% ...
Sulfur (also spelled sulphur in British English) is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with the chemical formula S 8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.
Sulfur trioxide (alternative spelling sulphur trioxide) is the chemical compound with the formula SO 3. It has been described as "unquestionably the most [economically] important sulfur oxide". [ 1 ] It is prepared on an industrial scale as a precursor to sulfuric acid .
Treatment of sulfur with hydrogen gives hydrogen sulfide.When dissolved in water, hydrogen sulfide is mildly acidic: [5] H 2 S ⇌ HS − + H +. Hydrogen sulfide gas and the hydrosulfide anion are extremely toxic to mammals, due to their inhibition of the oxygen-carrying capacity of hemoglobin and certain cytochromes in a manner analogous to cyanide and azide.
Sulfur monoxide is an inorganic compound with formula S O. It is only found as a dilute gas phase. It is only found as a dilute gas phase. When concentrated or condensed, it converts to S 2 O 2 ( disulfur dioxide ).
The S-S bond length is 188.4 pm, the S-O bond is 146.5 pm and the SSO angle is 117.88°. The two dipole moment components are μ a = 0.875 D and μ b = 1.18 D. [3] This species decomposes to give a polymeric sulfur oxides ("PSO's") with the approximate formula [S 3 O] n. PSO's decompose at room temperature to elemental sulfur and SO 2.