Xenon trioxide
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| Xenon trioxide | |
|---|---|
 |
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| IUPAC name | xenon trioxide xenon(VI) oxide |
| Identifiers | |
| CAS number | [13776-58-4] |
| Properties | |
| Molecular formula | XeO3 |
| Molar mass | 179.288 g/mol |
| Appearance | colorless crystalline solid |
| Density | 4.55 g/cm3, solid |
| Melting point |
25 °C Violent Decomposition |
| Solubility in water | Soluble (with reaction) |
| Structure | |
| Molecular shape | trigonal pyramidal |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
402 kJ/mol |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |
 0
4
4
OX
|
| Related compounds | |
| Related compounds | Perxenic acid Xenon tetroxide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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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 ⇌ H+ + HXeO4−
[edit] References
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