Hypobromous acid
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IUPAC name
Hypobromous acid
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Other names
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Identifiers | |
3D model (
JSmol ) |
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ChEBI | |
ChemSpider | |
ECHA InfoCard
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100.119.006 |
PubChem CID
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UNII | |
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Properties | |
HOBr | |
Molar mass | 96.911 g·mol−1 |
Density | 2.470 g/cm3 |
Boiling point | 20–25 °C (68–77 °F; 293–298 K) |
Acidity (pKa) | 8.65 |
Conjugate base
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Hypobromite |
Related compounds | |
Other cations
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Sodium hypobromite |
Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Hypobromous acid is an inorganic compound with chemical formula of HOBr. It is a weak, unstable acid. It is mainly produced and handled in an aqueous solution. It is generated both biologically and commercially as a disinfectant. Salts of hypobromite are rarely isolated as solids.
Synthesis and properties
Addition of bromine to water gives hypobromous acid and hydrobromic acid (HBr(aq)) via a disproportionation reaction.
- Br2 + H2O HOBr + HBr
In nature, hypobromous acid is produced by
- Br− + H2O2 HOBr + OH−
Hypobromous acid has a pKa of 8.65 and is therefore only partially dissociated in water at pH 7. Like the acid, hypobromite salts are unstable and undergo a slow disproportionation reaction to yield the respective bromate and bromide salts.
- 3 BrO−(aq) → 2 Br−(aq) + BrO−3(aq)
Its chemical and physical properties are similar to those of other hypohalites.
Uses
HOBr is used as a
References
- ^ Ximenes, V. F., Morgon, N. H., & de Souza, A. R. (2015). Hypobromous acid, a powerful endogenous electrophile: Experimental and theoretical studies. Journal of inorganic biochemistry, 146, 61-68.
- .
- PMID 2538427. Archived from the originalon 2009-05-26. Retrieved 2008-01-12.