Brominous acid

Structural formula
General
Surname	Brominous acid
other names	Bromine (III) acid
Molecular formula	HBrO 2
Brief description	not purely representable
External identifiers / databases
CAS number 37691-27-3 PubChem 165616 ChemSpider 145144 Wikidata Q419597
properties
Molar mass	112.91 g mol −1
solubility	only stable in aqueous solution
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

The bromous acid is the oxygen acid of bromine in the +3 oxidation state. It has the empirical formula HBrO ₂ . Their salts are the bromites . The acid is not stable in its free form and only occurs as an intermediate product in the oxidation of hypobromous acid to bromic acid . The oxidation can take place classically chemical or electrochemical ( anodic ).

${\displaystyle \mathrm {HBrO+HClO\longrightarrow HBrO_{2}+HCl} }$

The disproportionation of hypobromous acid also initially yields the bromous acid, which in turn disproportionates to hypobromous acid and bromic acid.

${\displaystyle \mathrm {2\ HBrO\longrightarrow HBrO_{2}+HBr} }$

The synproportionation of bromic acid and hydrobromic acid gives bromous acid:

${\displaystyle \mathrm {2\ HBrO_{3}+HBr\longrightarrow 3\ HBrO_{2}} }$

Individual evidence

1. ^ ^{A b c} A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 482.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.