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Properties of substance:
xenon trioxide
skc-file
Group of substances:
inorganic
Physical appearance:
colorless rhombic crystals
Empirical formula (Hill's system for organic substances):
O
3
Xe
Structural formula as text:
XeO3
Molar/atomic mass: 179.3
Decomposition temperature (°C):
40
Interatomic distances and bond angles:
Interatomic distances (in pm): 174 (Xe-O(1)) [crystals]
Interatomic distances (in pm): 176 (Xe-O(2)) [crystals]
Interatomic distances (in pm): 177 (Xe-O(3)) [crystals]
Numerical data:
Critical relative humidity (%): 25
Not numerical data:
very hygroscopic
Reactions:
[
Ref.1
]
2XeO
3
+ 4NaOH → Na
4
XeO
6
+ Xe + O
2
+ 2H
2
O
Electrode potential:
XeO
3
+ 6H
+
+ 6e
-
→ Xe + 3H
2
O, E = 1.8 V (water, 25°C)
H
4
XeO
6
+ 2H
+
+ 2e
-
→ XeO
3
+ 3H
2
O, E = 2.42 V (water, 25°C)
Dissociation:
pK
a
(1) = 10.5 (25°C, water)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
401.6 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
289 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
62.3 (g)
References:
CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-98
Progress in inorganic chemistry. - Vol. 29. - John Wiley & Sons, 1982. - pp. 198-199
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 75 [Russian]
Разумовский С.Д. Кислород - элементарные формы и свойства. - М.: Химия, 1979. - pp. 148 [Russian]
Успехи химии. - 1965. - Т.34, №6. - pp. 990-992 [Russian]
Успехи химии. - 1974. - Т.43, №12. - pp. 2169-2170 [Russian]
Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 548 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru