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Properties of substance:
mercury(I) chloride
Synonyms:
mercurous chloride
Group of substances:
inorganic
Physical appearance:
white tetragonal crystals
Empirical formula (Hill's system for organic substances):
Cl
2
Hg
2
Structural formula as text:
Hg2Cl2
Molar/atomic mass: 472.09
Sublimation point (°C):
383.7
Solubility (g/100 g of solvent):
acetone
: very slightly soluble [
Ref.
]
bromoform
: 0.055 (18°C) [
Ref.
]
diethyl ether
: very slightly soluble [
Ref.
]
ethanol
: very slightly soluble [
Ref.
]
ethyl acetate
: insoluble [
Ref.
]
hydrazine
: soluble with reaction 1 [
Ref.
]
phosphorus(V) trichloride oxide
: very slightly soluble [
Ref.
]
water
: 0.00014 (0.5°C) [
Ref.
]
water
: 0.00021 (18°C) [
Ref.
]
water
: 0.00028 (24.6°C) [
Ref.
]
water
: 0.0007 (43°C) [
Ref.
]
Density:
7.15 (20°C, g/cm
3
)
Reactions of synthesis:
[
Ref.1
]
Hg + HgCl
2
→ Hg
2
Cl
2
Vapour pressure (Torr):
0.1 (161°C)
1 (199°C)
10 (247°C)
100 (309°C)
Electrode potential:
Hg
2
Cl
2
+ 2e
-
→ 2Hg + 2Cl
-
, E = 0.268 V (water, 25°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-265.1 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-210.8 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
192.76 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
99.91 (s)
References:
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 620-621
Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 208 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 93 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 294, 824 [Russian]
Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 276 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru