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Properties of substance:
beryllium iodide
Group of substances:
inorganic
Physical appearance:
colorless needles crystals
Empirical formula (Hill's system for organic substances):
BeI
2
Structural formula as text:
BeI2
Molar/atomic mass: 262.82
Melting point (°C):
510
Boiling point (°C):
590
Solubility (g/100 g of solvent):
benzene
: insoluble [
Ref.
]
carbon disulphide
: very soluble [
Ref.
]
diethyl ether
: soluble [
Ref.
]
ethanol abs.
: soluble [
Ref.
]
oil of turpentine: insoluble [
Ref.
]
water
: reaction [
Ref.
]
Hygroscopic:
yes
Density:
4.325 (25°C, g/cm
3
)
Vapour pressure (Torr):
1 (282°C)
10 (339°C)
100 (410°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-165 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-210 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
130 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
71.1 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
19
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
80
References:
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 55 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru