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Properties of substance:
nickel(II) nitrate hexahydrate
Group of substances:
inorganic
Physical appearance:
green triclinic crystals
Empirical formula (Hill's system for organic substances):
H
1
2
N
2
NiO
1
2
Structural formula as text:
Ni(NO3)2 * 6H2O
Molar/atomic mass: 290.81
Melting point (°C):
56.7
Boiling point (°C):
136.7
Solubility (g/100 g of solvent):
acetone
: sparingly soluble [
Ref.
]
diethyl ether
: slightly soluble [
Ref.
]
dimethylformamide
: 20 (25°C) [
Ref.
]
ethanol
: soluble [
Ref.
]
ethyl acetate
: insoluble [
Ref.
]
glycerol
: soluble [
Ref.
]
methanol
: soluble [
Ref.
]
methyl acetate
: difficulty soluble [
Ref.
]
pyridine
: slightly soluble [
Ref.
]
water
: 94.2 (20°C) [
Ref.
]
water
: 118.4 (40°C) [
Ref.
]
water
: 157.7 (60°C) [
Ref.
]
water
: 225 (100°C) [
Ref.
]
Hygroscopic:
yes
Reactions:
[
Ref.1
]
Ni(NO
3
)
2
* 6H
2
O → Ni(NO
3
)
2
* 2H
2
O + 4H
2
O
Ni(NO
3
)
2
* 2H
2
O → Ni(OH)
2
NO
3
* H
2
O + NO
2
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-2215 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
511 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
462 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
41.4
References:
Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 172-173 [Russian]
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 152-153 [Russian]
Химическая технология неорганических веществ. - Кн.2, под ред. Ахметова Т.Г. - М.: Высшая школа, 2002. - pp. 507-508 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru