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Selenous acid

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Selenous acid

Molecular formula: H2O3Se CAS# 7783-00-8
Categories: Inorganic acids
PubChem CID: 1091 | ChemSpider ID: 1060 | CHEBI:26642 | CHEMBL2009089
Names
English:
(75se)selenous acid
CCRIS 5530
EINECS 231-974-7
HSDB 6065
Monohydrated selenium dioxide
SELENIOUS ACID
Selenious acid (H2SeO3)
Selenite,hydrogen
Selenium dioxide,monohydrated
Selenous acid(IUPAC)(CAS) [Wiki]

Variants of the formula:

H2SeO3
H(+1)2Se(+4)O(-2)3
OH_(A-115)$dots(T)Se`/O/_(A15)OH
(HO)2SeO
HO-Se`|O|-OH
H/O\Se|O`|/O\H
HO/Se`|O|\OH
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent

Reactions in which Selenous acid is involved

  • H2SeO3 + H2O2 -> H2SeO4 + H2O
  • 2H2SeO4 "200^oC"--> 2H2SeO3 + O2"|^"
  • H2SeO3 ">70^oC"--> SeO2 + H2O
  • SeO2 + H2O -> H2SeO3
  • Se + 4HNO3 -> H2SeO3 + 4NO2"|^" + H2O