Xenon trioxide

Xenon trioxide

Chembox new
Name = Xenon trioxide
ImageFile = Xenon-trioxide-2D.png ImageName = Xenon trioxide
IUPACName = xenon trioxide
xenon(VI) oxide
Section1 = Chembox Identifiers
CASNo = 13776-58-4
Section2 = Chembox Properties
Formula = XeO3
MolarMass = 179.288 g/mol
Appearance = colorless crystalline solid
Density = 4.55 g/cm3, solid
Solubility = Soluble (with reaction)
MeltingPt = 25 °C "Violent Decomposition"
pKa =
Section3 = Chembox Structure
MolShape = trigonal pyramidal
Section4 = Chembox Thermochemistry
DeltaHf = 402 kJ/mol
Section7 = Chembox Hazards
EUClass = not listed
NFPA-H = 4 | NFPA-R=4 | NFPA-F=0 | NFPA-O = OX
Section8 = Chembox Related
OtherCpds = Perxenic acid
Xenon tetroxide

Xenon trioxide is an unstable compound of xenon in its +6 oxidation state. It is a very powerful oxidizing agent, and liberates oxygen (and xenon) from water slowly, accelerated by exposure to sunlight. It is dangerously explosive upon contact with organic materials.When it dissolves in water, an acidic solution of xenic acid is formed:

XeO3(aq) + H2O → H2XeO4 unicode| H+ + HXeO4−

References

# [http://www.webelements.com/webelements/compounds/text/Xe/O3Xe1-13776584.html Webelements periodic table: page on Xenon(VI) oxide]


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