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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):

BeI2

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/cm3)

Vapour pressure (Torr):

1 (282°C)
10 (339°C)
100 (410°C)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-165 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

-210 (s)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

130 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

71.1 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

19

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

80

References:

  1. 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