Hydrobromic Acid Formula, Structure & Their Properties

hydrobromic acid chemical formula
hydrobromic acid chemical formula

If you are a graduated pass-out student. Well known about the hydrobromic acid formula because it is identified as a hydrogen bromide formula. The molecular formula of hydro-bromic acid is HBr. It is a diatomic molecule which is consists of a covalent bond between the hydrogen and bromine atoms. It is a strong acid as the ionized covalent bond due to the electro-negativity of the bromine atom. That’s why it is more potent than hydrochloric acid.

Hydrobromic acid has a pungent irritating odour and appears as a colourless gas. It is a corrosive mineral acid obtained by dissolving the diatomic molecules, i.e., hydrogen bromide, in water. It is colourless due to its anhydrous form, and in its aqueous form, it appears as a faint yellow colourless liquid with an acrid odour.

What Is Hydrobromic Acid?

Hydrobromic acid is a strong acid that is formed by the formation of hydrogen bromide in water. It is a diatomic molecule and aqueous solution that distils at 124.3C and contains 47.6% HBr by mass. Hydrogen bromide is a colourless, asphyxiating gas that is soluble in water. It fumes excitedly in the presence of damp air. Hydrogen bromide gas is an extremely corrosive material that can cause severe burns when it comes into contact.

Hydrobromic Acid Structure & Formula

The hydro-bromic acid formula is given below (HBr), and it is aqueous hydrogen bromide. The molar mass of hydrobromic acid is 80.9g/mol. This is all about a single covalent bond between hydrogen and bromine atoms. This bond can be easily ionized due to the high electronegativity of bromine. That’s why hydrobromic acid is a quite good strong acid.

Properties of Hydro-bromic Acid Formula

Here are the following properties of the hydrobromic acid formula, which are given below in the chart.

1 HBr Chemical formula HBr(aq)
2 HBr Molecular weight 80.91 g/mol
3 HBr Density 1.49 g/cm3
4 HBr Boiling point 122 °C
5 HBr Melting point −11 °C

Synthesis of Hydrobromic Acid

The synthesis of hydrobromic acid formula started in the laboratory by the reaction of bromine, sulfur dioxide, and water. It gave out sulphuric acid as a by-product. Below you can see the reaction.

Br2 + SO2 + 2 H2O → H2SO4 + 2 HBr

Hydrobromic acid has been prepared industrially with the reaction of three chemical reactants, and it is also produced electrolytically. The exact form HBr is formed by dilute sulphuric acid and potassium bromide reaction. On the other hand, the HBr will be extracted as a product, and the making of HBr is accessible in a commercial field in various concentrations.

H2SO4 + KBr → KHSO4 + HBr

Uses of Hydro-bromic Acid

Hydrobromic acid produces different compounds such as organic bromine and inorganic bromides in the commercial area. It has various usage in different fields. For example, zinc bromide, allyl bromide, and bromoacetic acid. Hydrobromic acid participates in anti – Markovnikov hydrohalogenation of alkenes. Moreover, it is also a potent chemical that we use to obtain specific metal ores. In addition, it is usually used in natural chemistry and inorganic chemistry. However, oxidation and catalysis are two of their uses.

The Chemical & Physical Properties of Hydrobromic Acid

The following are the physical and chemical properties of the hydrobromic acid formula, and that will be helpful for you for the production of more HBr in the laboratory.

formula for hydrobromic acid
formula for hydrobromic acid

Chemical Properties

Hydrobromic acid is strong mineral acid and stronger than hydrochloric acid. It typically reacts with bases for the formation of bromide salts. Hydrobromic acid is a highly reactive and extremely corrosive acid that can cause tissue damage. In contrast, the inhalation of pungent fumes can irritate and damage your eyes, mucous membrane, and respiratory system. We know well, it is an acid sir it can also cause burns on the skin. So be aware of it.

Physical Properties

The physical properties of HBr are (boiling point, melting point, & density), which depends on the concentration of a solution. However, it has a constant boiling temperature as an aqueous solution, which is around 48% w/w. In addition, it is a colourless and pale-yellow color liquid. The density of HBr is 1.49g/ml, and it has a strong and pungent odour.


Hydrobromic acid is a diatomic molecule that consists of a single covalent bond, the hydrogen and bromine atoms. It is more potent than hydrochloric acid and appears yellow colourless liquid with an acrid odour. In addition, HBr can cause skin burn, eyes irritation, damage mucous membrane, and much more. Attempt all the precautions when you people prepared HBr chemical for your experiment, and please let me know when you prepared it, how it went and how long it took.