Chemical Properties of Hydroiodic Acid
- When hydroiodic acid reacts with fuming nitric acid, it produces iodine, nitrogen oxide, and water.
2HNO3 + 6HI → 2NO + 3I2 + 4H2O
- When hydroiodic acid reacts with a base, such as sodium hydroxide, it produces sodium iodide and water.
HI + NaOH → NaI + H2O
Hydroiodic Acid Formula
Hydroiodic Acid is an aqueous hydrogen iodide solution. It is formed when hydrogen iodide gas is dissolved in water. A molecule is composed of a hydrogen atom and an iodine atom in its anhydrous state. It is a colourless liquid with an unpleasant odour. It has a cooling, saline-strong flavour and is odourless. It is commercially prepared by reacting iodine with hydrazine, which produces hydrogen iodide and nitrogen gas. Because of the remarkable stability of its corresponding conjugate base, it is one of the strongest of the common halide acids. The chemical formula of Hydroiodic acid is HI.