- Definition of HBr
HBr, or Hydrobromic, also known as hydrobromic acid in English, is a chemical compound consisting of two atoms: hydrogen and bromine, with a molecular weight of 80.91 g/mol. In the structure of the HBr molecule, the hydrogen atom is bonded to the bromine atom through a covalent bond to form an HBr molecule. When electrolyzed, HBr produces Br- and H+ ions.
- Properties of HBr
In terms of physical properties, HBr in the gaseous state is transparent, colorless, and has a rather unpleasant distinctive smell. It has strong acidic properties so when diluted with water it reacts vigorously, with low pH.
In terms of chemical properties, HBr is very reactive with metals, non-metals, or salts. Due to its strong acidity, HBr has the ability to attack many materials, causing corrosion.
- Common chemical equations
HBr can react with Metals such as Na, K, Ca… to form bromide salts and hydrogen; with non-metals such as S, P… to form bromide compounds; or with salts such as NaCl… to form bromide compounds and acid.
- Synthesis of HBr
HBr can be synthesized in the laboratory by treating bromine with a mixture of hydrogen and chlorine gases at high temperatures. In industry, HBr is produced by reacting bromine with hydrogen gas at temperatures of 200 – 400 degrees C.