Vesinikjodiid

Vesinikjodiid, also known as hydrogen iodide, is a chemical compound with the formula HI. It is a diatomic molecule composed of a hydrogen atom and an iodine atom. At standard temperature and pressure, it exists as a colorless gas. Vesinikjodiid is highly soluble in water, forming a strong acid called hydroiodic acid. This acid is one of the strongest known Brønsted–Lowry acids. Hydroiodic acid is a colorless solution that can turn yellowish or brown due to the presence of free iodine, which forms from the decomposition of HI in the presence of air.

Vesinikjodiid is a powerful reducing agent and can react vigorously with oxidizing agents. It is also used in various chemical syntheses. For instance, it can be used to produce alkyl iodides from alcohols and is involved in the synthesis of certain pharmaceuticals and organic compounds. Industrially, it can be prepared by reacting iodine with hydrogen sulfide, or by the reaction of phosphorus and iodine in the presence of water. Due to its corrosive nature and reactivity, vesinikjodiid and hydroiodic acid require careful handling and storage.