hydrojoodwaterstofzuur

Hydrojoodwaterstofzuur, also known as hydroiodic acid, is a strong acid with the chemical formula HI. It is a colorless liquid when pure, but often appears yellow due to the presence of free iodine. Hydroiodic acid is one of the six common strong acids in chemistry.

Hydroiodic acid is formed by the reaction of hydrogen iodide gas (HI) with water. Hydrogen iodide itself can be produced through various methods, including the reaction of iodine with hydrogen gas or the reaction of phosphorus triiodide with water. It is a corrosive substance and a powerful reducing agent.

In aqueous solution, hydroiodic acid completely dissociates into hydrogen ions (H+) and iodide ions (I-). This high degree of dissociation is what makes it a strong acid. It readily donates protons to bases.

Hydroiodic acid has several applications. It is used in organic chemistry as a reagent for dealkylation of ethers and in the reduction of various functional groups. It is also employed in the production of certain iodine compounds and in analytical chemistry. Due to its strong reducing properties, it can be used to remove halogens from organic molecules. It is important to handle hydroiodic acid with care due to its corrosive nature and potential to release toxic fumes.