Xenic acid

Xenic acid
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/H2O4Xe/c1-5(2,3)4/h1-2H N
    Key: HRLLZBGOCZURJC-UHFFFAOYSA-N N
  • InChI=1/H2O4Xe/c1-5(2,3)4/h1-2H
    Key: HRLLZBGOCZURJC-UHFFFAOYAW
  • O[Xe](O)(=O)=O
Properties
H2XeO4
Molar mass 197.31 g/mol
Acidity (pKa) ≈10
Related compounds
Related compounds
 Perxenic acid
Xenon trioxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Xenic acid is a proposed noble gas compound with the chemical formula H2XeO4 or XeO2(OH)2. It has not been isolated, and the published characterization data are ambiguous.

Salts of xenic acid are called xenates, containing the HXeO−
4 anion, such as monosodium xenate. They tend to disproportionate into xenon gas and perxenates:

2 HXeO−
4 + 2 OH−
 → XeO4−
6 + Xe + O
2 + 2 H
2O

The energy given off is sufficient to form ozone from diatomic oxygen:

3 O
2 (g) → 2 O
3 (g)

Salts containing the deprotonated anion XeO2−
4 are presently unknown.

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