Sulfur Daily Question, March 26------5 rewards for participation, 10 rewards for correct answers
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This post was last edited by Sulfur-Zinc-Aluminum on 2016-3-28 at 14:51. What are the physical and chemical properties of hydrogen sulfide?
Colorless gas with a foul odor (like rotten eggs); vapor pressure 2026.5 kPa at 25.5°C; flash point
Basic physical properties: Colorless gas with a foul odor (like rotten eggs); vapor pressure 2026.5 kPa at 25.5°C; flash point
Hydrogen sulfide, with the molecular formula H2S and a molecular weight of 34.076, is a flammable acidic gas under standard conditions; it is colorless, and at low concentrations it has an odor similar to that of rotten eggs. Hydrogen sulfide is an important chemical raw material. Hydrogen sulfide is a colorless gas with a rotten egg odor, and its aqueous solution is hydrosulfuric acid. The molecular weight is 34.08, the vapor pressure is 2026.5 kPa at 25.5°C, and the flash point is
At room temperature, hydrogen sulfide is a colorless gas with a pungent odor (resembling rotten eggs). It is highly toxic; its aqueous solution is acidic. It is flammable, possesses strong reducing properties, and is toxic.
Physical properties: Colorless gas with a rotten egg odor; soluble in water (2.6 volumes); heavier than air; toxic. Chemical properties: 1) It decomposes easily when heated: H2S = H2 + S. 2) It is combustible: Complete combustion occurs in the presence of sufficient air: 2H2S + 3O2 = 2SO2 + 2H2O (condition: ignition); incomplete combustion occurs when there is insufficient air: 2H2S + O2 = 2S + 2H2O. 3) Reducing property: Sulfur in hydrogen sulfide is in its lowest oxidation state, giving it strong reducing properties; it is easily oxidized and thus acts as a strong reducing agent. 2H2S + SO2 = 2H2O + 3S; H2S + Cl2 = 2HCl + S (Similar reactions occur with Br2 and I2); H2S + H2SO4 (concentrated) = S↓ + SO2 + 2H2O (H2S cannot be dried using concentrated sulfuric acid)
Hydrogen sulfide, with the molecular formula H2S and a molecular weight of 34.076, is a flammable acidic gas under standard conditions; it is colorless, and at low concentrations it has an odor similar to that of rotten eggs. Hydrogen sulfide is an important chemical raw material. Hydrogen sulfide is a colorless gas with a rotten egg odor, and its aqueous solution is hydrosulfuric acid. The molecular weight is 34.08, the vapor pressure is 2026.5 kPa at 25.5°C, and the flash point is
With a molecular weight of 34.076, it is a flammable acidic gas under standard conditions; it is colorless, and at low concentrations it has an odor similar to that of rotten eggs. It has **. Hydrogen sulfide is an important chemical raw material. The flash point is
Hydrogen sulfide, with the molecular formula H2S and a molecular weight of 34.076, is a flammable acidic gas under standard conditions; it is colorless, and at low concentrations it has an odor similar to that of rotten eggs. Hydrogen sulfide is an important chemical raw material. Hydrogen sulfide is a colorless gas with a rotten egg odor, and its aqueous solution is hydrosulfuric acid. The molecular weight is 34.08, the vapor pressure is 2026.5 kPa at 25.5°C, and the flash point is
Physical properties: Colorless, with an irritating odor similar to that of rotten eggs; denser than air and soluble in water. Chemical properties: Toxic and unstable; H2S = H2 + S (reversible reaction upon heating). Acidic: An aqueous solution of H2S is called hydrosulfuric acid, and it is a weak diprotic acid. 2NaOH + H2S = Na2S + 2H2O. Reducing property: The sulfur atom in H2S has a valence of -2, giving it strong reducing properties; it can be easily oxidized by substances such as SO2, Cl2, and O2. Flammability: When ignited in air, it produces sulfur dioxide and water: 2H2S + 3O2 ==== 2SO2 + 2H2O (the flame is blue); this occurs under conditions of ignition. If there is insufficient air or the temperature is low, elemental sulfur and water are produced instead.
There are tons of them! Under standard conditions, it is a flammable acidic gas that is colorless; at low concentrations it has an odor similar to rotten eggs. It has **. Hydrogen sulfide is an important chemical raw material. Hydrogen sulfide is a colorless gas with a rotten egg odor, and its aqueous solution is hydrosulfuric acid. The molecular weight is 34.08, the vapor pressure is 2026.5 kPa at 25.5°C, and the flash point is