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While reaction between sulfur and oxygen under normal conditions gives sulfur dioxide (oxidation state +4), formation of sulfur trioxide (oxidation state +6) requires a temperature of 400–600 °C (750–1,100 °F) and presence of a catalyst.
A diatomic gas with a triplet ground state like dioxygen. [35] S 3: ... Only stable above 95.3 °C, it reverts to α-sulfur at room temperature. [5] cyclo-S 8: γ-sulfur
At room temperature, it is a colorless liquid with a pungent odor. ... Sulfur is tetrahedral in SO 2 Cl 2 and the oxidation state of the sulfur atom is +6, ...
Sulfur dioxide is the product of the burning of sulfur or of burning materials that contain sulfur: S 8 + 8 O 2 → 8 SO 2 , ΔH = −297 kJ/mol To aid combustion, liquified sulfur (140–150 °C (284–302 °F) is sprayed through an atomizing nozzle to generate fine drops of sulfur with a large surface area.
Sulfur trioxide exists in several forms: gaseous monomer, crystalline trimer, and solid polymer. Sulfur trioxide is a solid at just below room temperature with a relatively narrow liquid range. Gaseous SO 3 is the primary precursor to acid rain. [6]
The density of sulfur hexafluoride is relatively high at room temperature and pressure due to the gas's large molar mass. Unlike helium, which has a molar mass of about 4 g/mol and pitches the voice up, SF 6 has a molar mass of about 146 g/mol, and the speed of sound through the gas is about 134 m/s at room temperature, pitching the voice down ...
Sulfur dichloride is the chemical compound with the formula SCl 2. This cherry-red liquid is the simplest sulfur chloride and one of the most common, and it is used as a precursor to organosulfur compounds. It is a highly corrosive and toxic substance, and it reacts on contact with water to form chlorine-containing acids.
Sulfur (monoclinic) Solid S 8: 0.3 Sulfur (rhombic) Solid S 8: 0 Hydrogen sulfide: Gas H 2 S −20.63 Sulfur dioxide: Gas SO 2: −296.84 Sulfur trioxide: Gas SO 3: −395.7 Sulfuric acid: Liquid H 2 SO 4: −814 Titanium: Gas Ti 468 Titanium tetrachloride: Gas TiCl 4: −763.2 Titanium tetrachloride: Liquid TiCl 4: −804.2 Titanium dioxide ...