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What is the name of HBr (in water)?

Answer
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Hint: Hydrogen bromide comes under the category of inorganic compound which is capable of forming hydrogen bonds due to the presence of electronegative bromine atoms. Hydrogen bromides exist in a gaseous state in the atmosphere.

Complete answer:
Hydrogen bromide is also known as hydrogen halide because halogen atoms are combined with hydrogen atoms to form hydrogen halides. Like other hydrogen halides of the halogen family, hydrogen bromide is a colorless gas which is stable in the atmosphere.
From the structure of hydrogen bromide, it is clear that hydrogen bromide molecules are capable of forming hydrogen bonds. When we dissolve hydrogen bromide in water, it forms hydrogen bonding with oxygen of water to form a solution.
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When hydrogen bromide gas dissolves into water to form a solution of Hydrogen bromide it is commonly known as hydrobromic acid.
The chemical reaction of formation of hydrobromic acid from hydrogen bromide is expressed as:
HBr(s,liq,gas)HBr(aq)
Aqueous hydrogen bromide is known as acid because after dissolution into water, hydrobromic acid acts as a very strong acid by releasing bromide ion and hydronium ion in the water.
Chemical reaction which shows formation of bromide ion and hydronium ion in water by hydrobromic acid is expressed as:
HBr(aq)+H2OH3O++Br
Solid gases, or liquid physical state of HBr, is known as hydrogen bromide but aqueous HBr(aq) is known as hydrobromic acid.
The name of HBr (in water) is Hydrobromic acid.

Note:
Hydrobromic acid forms a saturated solution which contains 68.85% of HBr in it. However, hydrobromic acid that contains HBr by 47.6% of mass forms an azeotropic mixture which shows a boiling point near 124.3C.
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