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Properties of substance:
mercury(II) oxide yellow
Group of substances:
inorganic
Physical appearance:
yellow rhombic crystals
Empirical formula (Hill's system for organic substances):
HgO
Structural formula as text:
HgO
Molar/atomic mass: 216.59
Decomposition temperature (°C):
400
Solubility (g/100 g of solvent):
acetone
: insoluble [
Ref.
]
diethyl ether
: insoluble [
Ref.
]
ethanol
: insoluble [
Ref.
]
water
: 0.0052 (25°C) [
Ref.
]
water
: 0.041 (100°C) [
Ref.
]
Density:
11.03 (20°C, g/cm
3
)
Reactions of synthesis:
[
Ref.1
]
Hg
3
O
2
(NO
3
)
2
+ H
2
O → 3HgO + 2HNO
3
Reactions:
[
Ref.1
,
Ref.2
,
Ref.3
]
2Cl
2
+ HgO → Cl
2
O + HgCl
2
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-90.5 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-58.5 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
71.29 (s)
References:
Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 194 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 92-93 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru