Bromites
Bromites are the salts of the bromous acid (HBrO 2 ). They contain the bromite anion BrO 2 - .
Bromites are formed by the oxidation of hypobromite with hypochlorite in alkaline solutions:
- BrO - + ClO - → BrO 2 - + Cl - .
Lithiumbromit can be carried Comproportionation of lithium bromide and lithium bromate win:
- LiBr + 2 LiBrO 3 → 3 LiBrO 2 .
Bromites are yellow to orange both as crystals and in aqueous solution. In acidic solution they decompose into bromine and bromates :
- 5 NaBrO 2 + 2 HCl → 3 NaBrO 3 + 2 NaCl + H 2 O + Br 2 .
The bromous acid HBrO 2 is therefore unstable, it breaks down if you want to displace it from its salts .
Sodium bromite was used as a tanning agent ( oxidation of starch ) in the textile industry.
Individual evidence
- ^ A b A. F. Holleman, Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 978-0-12-352651-9 , pp. 449 ( limited preview in Google Book search).