Hydrobromic acid

Hydrobromic acid

Chembox new
Name = Hydrobromic acid
ImageFile = Hydrobromic acid.png ImageSize = 150px
ImageName = Hydrobromic acid
Section1 = Chembox Identifiers
CASNo = [10035-10-6]
RTECS = MW3850000
Section2 = Chembox Properties
Formula = HBr
MolarMass = 80.91 g/mol
Appearance = colorless liquid
Density = variable
Solubility = aqueous solution
MeltingPt = variable
BoilingPt = variable
pKa = −9
Section7 = Chembox Hazards
EUClass = Corrosive (C)
NFPA-H = 3
NFPA-F =
NFPA-R =
RPhrases = R34, R37
SPhrases = S1/2, S7/9, S26, S45
FlashPt = non flammable
Section8 = Chembox Related
OtherAnions = Fluoride
Chloride
Iodide
OtherCpds = Hydrogen bromide

Hydrobromic Acid is formed by dissolving the diatomic molecule hydrogen bromide in water. It has a pKa of −9, making it a stronger acid than hydrochloric acid, but not as strong as hydroiodic acid. Hydrobromic acid is one of the strongest mineral acids known. (See strong acid.)

Uses

Hydrobromic acid is mainly used for the production of inorganic bromides, cleaning alkoxy and phenoxy compounds, substitution of hydroxyl groups, and the hydrobromination of alkenes. It also catalyzes alkylation reactions and the extraction of certain ores.Carlin, W. W. US patent|4147601]

yntheses

Hydrobromic acid can be prepared in the laboratory via the reaction of Br2, SO2, and water. More typically laboratory preparations involve the production of anhydrous HBr, which is then dissolved in water.

Hydrobromic acid has commonly been prepared industrially by reacting bromine with either sulfur or phosphorus and water. However, it can also be produced electrolytically.cite journal | author = Scott, A. | year = 1900 | title = Preparation of pure hydrobromic acid | journal = J. Chem. Soc., Trans. | pages = 648–650 | doi = 10.1039/ct9007700648 | volume = 77] . It can also be prepared by treating bromides with non-oxidising acids like phosphoric or acetic acids.

Hydrobromic acid is available in various concentrations and purities.

References

External links

* [http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc02/icsc0282.htm International Chemical Safety Card 0282]
* [http://www.cdc.gov/niosh/npg/npgd0331.html NIOSH Pocket Guide to Chemical Hazards]


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Look at other dictionaries:

  • Hydrobromic acid — Hydrobromic Hy dro*bro mic, a. [Hydro , 2 + bromic.] (Chem.) Composed of hydrogen and bromine; as, hydrobromic acid. [1913 Webster] {Hydrobromic acid} (Chem.), a colorless, pungent, corrosive gas, {HBr}, usually collected as a solution in water.… …   The Collaborative International Dictionary of English

  • hydrobromic acid — [hī΄drō brō′mik] n. [ HYDR(O) + BROMIC] a strong acid that is a water solution of the gas hydrogen bromide, HBr …   English World dictionary

  • hydrobromic acid — vandenilio bromidas statusas T sritis chemija formulė HBr atitikmenys: angl. hydrobromic acid; hydrogen bromide rus. бромоводород; водорода бромид …   Chemijos terminų aiškinamasis žodynas

  • hydrobromic acid — noun A solution of hydrogen bromide, HBr, in water; it is a strong acid, used in the production of bromine compounds. See Also: bromous acid, bromic acid, perbromic acid, bromide …   Wiktionary

  • hydrobromic acid — An aqueous solution of hydrogen bromide (HBr); its salts are bromides. * * * hy·dro·bro·mic acid .hī drə .brō mik n an aqueous solution of hydrogen bromide HBr that is a strong acid resembling hydrochloric acid chemically, that is a weak reducing …   Medical dictionary

  • hydrobromic acid — noun Etymology: International Scientific Vocabulary Date: 1830 an aqueous solution of hydrogen bromide HBr that is a strong acid and a weak reducing agent and that is used especially for making bromides …   New Collegiate Dictionary

  • hydrobromic acid — a colorless or faintly yellow corrosive liquid, HBr, an aqueous solution of hydrogen bromide. [1830 40] * * * …   Universalium

  • hydrobromic acid — [ˌhʌɪdrə(ʊ) brəʊmɪk] noun Chemistry a strongly acidic solution of the gas hydrogen bromide. [HBr.] …   English new terms dictionary

  • hydrobromic acid — hy′dro•bro′mic ac′id [[t]ˈhaɪ drəˈbroʊ mɪk, ˌhaɪ [/t]] n. chem. a colorless or faintly yellow corrosive liquid, HBr, an aqueous solution of hydrogen bromide • Etymology: 1830–40 …   From formal English to slang

  • hydrobromic acid — /ˌhaɪdroʊbroʊmɪk ˈæsəd/ (say .huydrohbrohmik asuhd) noun an aqueous solution of hydrogen bromide …  

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