See more Encyclopedia articles on: Compounds and Elements. Enter your search terms:. It is slightly soluble in water and is soluble in carbon disulfide. Dissolved in water, it forms a very weak dibasic acid that is sometimes called hydrosulfuric acid.
Hydrogen sulfide is flammable; in an excess of air it burns to form sulfur dioxide and water, but if not enough oxygen is present, it forms elemental sulfur and water. Hydrogen sulfide is found naturally in volcanic gases and in some mineral waters. It is often formed during decay of animal matter. Sep 2, Here's my take on this. Explanation: The key here is the fact that hydrogen sulfide has a smaller dipole moment than water.
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