A colorless, heavier-than-air gas with a pungent odor.
hydrogen iodide, hydrogen halide, molecule, covalent bond, sigma bond, polar, inorganic chemistry, general chemistry, chemistry
Molar mass: 127.91 g/mol
Melting point: -51.0 °C (-59.8 °F)
Boiling point: -35.1 °C (-31.18 °F)
Relative steam density (air=1): 4.4
Hydrogen iodide dissolves well in water; the aqueous solution is acidic and reacts intensively with bases. Its salts are called iodides. It is not combustible. It participates in the halogenation reactions of metals, non-metals, hydrides and oxides.
Occurrence and production
In laboratories, it is formed from phosphorus triiodide and water or by adding hydrogen sulfide to the aqueous solution of iodine. In industry, it is synthesized during a reaction of hydrogen and gaseous iodine in the presence of platinum as a catalyst.
It is used in the production of organic or non-organic iodine compounds, such as medicines and fertilizers. It is also used as a reducing agent.
Atoms within hydrogen halides are bound by covalent bonds, forming polar molecules.
One of the hydrogen halides, it is used for the production of alkyl bromides.
A colorless gas with a pungent odor, its solution in water is called hydrochloric acid.
One of the hydrogen halides, a highly aggressive substance - it even attacks glass.
A solid, gray substance which sublimates when heated. Its solution in alcohol is called ´tincture of iodine´, it is a disinfectant.
Colorless, odorless, lighter-than-air gas. The most common chemical element in the universe.
A solid, gray substance which sublimates when heated. Its solution in alcohol is called tincture of iodine, it is a disinfectant.
A light yellow compound formed in the reaction of silver nitrate and potassium iodide.