Sulfur Recovery Daily Question 2018.8.25
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Question: Important physical and chemical properties of hydrogen sulfide. Answer: Hydrogen sulfide is a colorless, flammable, and highly toxic gas with an odor similar to that of rotten eggs. Its molecular formula is H2S, with a molecular weight of 34.08 and a density of 1.539 Kg/m3; its specific gravity is 1.19. Pure hydrogen sulfide can ignite at 246°C in air or at 220°C in oxygen. When mixed with air, it can explode, and its explosive range is 4.3% to 45.5%. H2S dissolves in water; 4.65 volumes of H2S can dissolve in one volume of water. The aqueous solution is weakly acidic (hydrogen sulfide). Hydrogen sulfide is unstable and is easily oxidized by oxygen present in the aqueous solution, which causes the H2S solution to become cloudy (as elemental sulfur precipitates out).
The main physical properties of hydrogen sulfide are: it is colorless with an irritating odor (resembling rotten eggs), its density is greater than that of air, it is soluble in water, and it readily dissolves in alcohols, petroleum solvents, and crude oil; its ignition point is 292°C. Properties and stability of hydrogen sulfide: It has extremely high solubility in organic amines. It also has a high solubility in caustic alkali solutions. When burned in excess oxygen, it produces sulfur dioxide and water; when the oxygen supply is insufficient, it produces water and elemental sulfur. Stable at room temperature. It is soluble in water; its aqueous solution is weakly acidic, and it gradually becomes cloudy due to the oxidation and precipitation of sulfur upon contact with air. It can burn in air to produce a blue flame and generate SO2 and H2O; in conditions of insufficient air, it produces S and H2O. It is highly toxic; even dilute hydrogen sulfide can irritate the respiratory tract and eyes and cause headaches. At concentrations of 1 mg/L or higher, it can be life-threatening. Therefore, H2S should be prepared and used in a fume hood.
Hydrogen sulfide is a colorless, flammable, and highly toxic gas with an odor similar to that of rotten eggs. Its molecular formula is H2S, with a molecular weight of 34.08 and a density of 1.539 Kg/m³; its specific gravity is 1.19. Pure hydrogen sulfide can ignite at 246°C in air or at 220°C in oxygen. When mixed with air, it can explode, and its explosive range is 4.3% to 45.5%. H2S dissolves in water; 4.65 volumes of H2S can dissolve in one volume of water. The aqueous solution is weakly acidic (hydrogen sulfide). Hydrogen sulfide is unstable and is easily oxidized by oxygen present in the aqueous solution, which causes the H2S solution to become cloudy (as elemental sulfur precipitates out).
Chemical name: Hydrogen sulfide (H2S). Molecular structure: The molecule has a V-shaped structure, with a bond angle of 92°; it is a polar molecule. Description of the chemical: Hydrogen sulfide is a colorless, toxic gas with an odor similar to that of rotten eggs. When its concentration in the air exceeds 0.1%, it can cause symptoms of poisoning such as headaches and dizziness. Therefore, its production or use must take place in enclosed systems or fume hoods. Its aqueous solution (hydrogen sulfide solution) is weakly acidic. The chemical formula is H2S, with a molecular weight of 34.08. It is considered an air pollutant. Its density is 1.539 grams per liter. The melting point is -85.5°C, and the boiling point is -60.7°C. It is a toxic, foul-smelling colorless gas. When the air contains 0.1% H2S, it can cause headaches and dizziness in people. Inhaling large amounts of H2S can lead to unconsciousness or even death. Prolonged exposure to H2S can result in chronic poisoning, causing problems such as poor sense of smell, headaches, and weight loss. In industrial settings, the concentration of H2S in the air is required to be no more than 0.01 milligrams per liter. H2S is slightly soluble in water; its aqueous solution is known as hydrogen sulfide solution. It is chemically unstable and can burn in air when ignited; it also has reducing properties. It can cause the surfaces of silver and copper objects to turn black. It reacts with many metal ions to form insoluble sulfide precipitates. It also reacts with many non-metals to produce elemental sulfur. The main physical properties of hydrogen sulfide are: it is colorless but has a pungent odor similar to that of rotten eggs; its density is greater than that of air; it is soluble in water, as well as in alcohols, petroleum solvents, and crude oil. Its ignition point is 292°C. Properties and stability of hydrogen sulfide: It has extremely high solubility in organic amines. It also has a high solubility in caustic alkali solutions. When burned in excess oxygen, it produces sulfur dioxide and water; when the oxygen supply is insufficient, it produces water and elemental sulfur. Stable at room temperature. It is soluble in water; its aqueous solution is weakly acidic, and it gradually becomes cloudy due to the oxidation and precipitation of sulfur upon contact with air. It can burn in air to produce a blue flame and generate SO2 and H2O; in conditions of insufficient air, it produces S and H2O. It is highly toxic; even dilute hydrogen sulfide can irritate the respiratory tract and eyes and cause headaches. At concentrations of 1 mg/L or higher, it can be life-threatening. Therefore, H2S should be prepared and used in a fume hood.
The main physical properties of hydrogen sulfide are: it is colorless with an irritating odor (resembling rotten eggs), its density is greater than that of air, it is soluble in water, and it readily dissolves in alcohols, petroleum solvents, and crude oil; its ignition point is 292°C. Properties and stability of hydrogen sulfide: It has extremely high solubility in organic amines. It also has a high solubility in caustic alkali solutions. When burned in excess oxygen, it produces sulfur dioxide and water; when the oxygen supply is insufficient, it produces water and elemental sulfur. Stable at room temperature. It is soluble in water; its aqueous solution is weakly acidic, and it gradually becomes cloudy due to the oxidation and precipitation of sulfur upon contact with air. It can burn in air to produce a blue flame and generate SO2 and H2O; in conditions of insufficient air, it produces S and H2O. It is highly toxic; even dilute hydrogen sulfide can irritate the respiratory tract and eyes and cause headaches. At concentrations of 1 mg/L or higher, it can be life-threatening. Therefore, H2S should be prepared and used in a fume hood.
Hydrogen sulfide is a colorless, flammable, and highly toxic gas with an odor similar to that of rotten eggs. Its molecular formula is H2S, with a molecular weight of 34.08 and a density of 1.539 Kg/m3; its specific gravity is 1.19. Pure hydrogen sulfide can ignite at 246°C in air or at 220°C in oxygen. When mixed with air, it can explode, and its explosive range is 4.3% to 45.5%. H2S dissolves in water; 4.65 volumes of H2S can dissolve in one volume of water. The aqueous solution is weakly acidic (hydrogen sulfide). Hydrogen sulfide is unstable and is easily oxidized by oxygen present in the aqueous solution, which causes the H2S solution to become cloudy (as elemental sulfur precipitates out).
Hydrogen sulfide is a colorless, flammable, and highly toxic gas with an odor similar to that of rotten eggs. Its molecular formula is H2S, with a molecular weight of 34.08 and a density of 1.539 Kg/m³; its specific gravity is 1.19. Pure hydrogen sulfide can ignite at 246°C in air or at 220°C in oxygen. When mixed with air, it can explode, and its explosive range is 4.3% to 45.5%. H2S dissolves in water; 4.65 volumes of H2S can dissolve in one volume of water. The aqueous solution is weakly acidic (hydrogen sulfide). Hydrogen sulfide is unstable and is easily oxidized by oxygen present in the aqueous solution, which causes the H2S solution to become cloudy (as elemental sulfur precipitates out).
Hydrogen sulfide is a colorless, flammable, and highly toxic gas with an odor similar to that of rotten eggs. Its molecular formula is H2S, with a molecular weight of 34.08 and a density of 1.539 Kg/m³; its specific gravity is 1.19. Pure hydrogen sulfide can ignite at 246°C in air or at 220°C in oxygen. When mixed with air, it can explode, and its explosive range is 4.3% to 45.5%.
The main physical properties of hydrogen sulfide are: it is colorless with an irritating odor (resembling rotten eggs), its density is greater than that of air, it is soluble in water, and it readily dissolves in alcohols, petroleum solvents, and crude oil; its ignition point is 292°C. Properties and stability of hydrogen sulfide: It has extremely high solubility in organic amines. It also has a high solubility in caustic alkali solutions. When burned in excess oxygen, it produces sulfur dioxide and water; when the oxygen supply is insufficient, it produces water and elemental sulfur. Stable at room temperature. It is soluble in water; its aqueous solution is weakly acidic, and it gradually becomes cloudy due to the oxidation and precipitation of sulfur upon contact with air. It can burn in air to produce a blue flame and generate SO2 and H2O; in conditions of insufficient air, it produces S and H2O. It is highly toxic; even dilute hydrogen sulfide can irritate the respiratory tract and eyes and cause headaches. At concentrations of 1 mg/L or higher, it can be life-threatening. Therefore, H2S should be prepared and used in a fume hood.
Hydrogen sulfide is a colorless, flammable, and highly toxic gas with an odor similar to that of rotten eggs. Its molecular formula is H2S, with a molecular weight of 34.08 and a density of 1.539 Kg/m³; its specific gravity is 1.19. Pure hydrogen sulfide can ignite at 246°C in air or at 220°C in oxygen. When mixed with air, it can explode, and its explosive range is 4.3% to 45.5%. H2S dissolves in water; 4.65 volumes of H2S can be dissolved in one volume of water. The aqueous solution is weakly acidic (hydrogen sulfide). Hydrogen sulfide is unstable and is easily oxidized by oxygen present in the aqueous solution, which causes the H2S solution to become cloudy (as elemental sulfur precipitates out).
Hydrogen sulfide is a colorless, toxic gas with an odor similar to that of rotten eggs. When its volume fraction in the air exceeds 0.1%, it can cause poisoning symptoms such as headaches and dizziness; therefore, its production or use must take place in a closed system or fume hood. Its aqueous solution (hydrogen sulfide solution) is weakly acidic. The chemical formula is H2S, with a molecular weight of 34.08. It is considered an air pollutant. Its density is 1.539 grams per liter, and its melting point is -85.5°C while its boiling point is -60.7°C. It is a toxic, foul-smelling colorless gas. When the air contains 0.1% H2S, it can cause headaches and dizziness in people. Inhaling large amounts of H2S can lead to coma or even death. Prolonged exposure to H2S can result in chronic poisoning, causing problems such as poor sense perception, headaches, and weight loss. In industrial settings, the concentration of H2S in the air is required to be no more than 0.01 milligrams per liter. H2S is slightly soluble in water, and its aqueous solution is known as hydrogen sulfide solution. It has unstable chemical properties; it can burn in air when ignited and possesses reducing properties. It can cause the surfaces of silver and copper products to turn black. It reacts with many metal ions to form insoluble sulfide precipitates in water or acid. It also reacts with many non-metals to produce elemental sulfur.