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Properties of substance:

germane

Group of substances:

inorganic

Physical appearance:

colorless gas

Empirical formula (Hill's system for organic substances):

H4Ge

Structural formula as text:

GeH4

Molar/atomic mass: 72.62

Melting point (°C):

-165.8

Boiling point (°C):

-88.5

Decomposition temperature (°C):

220

Solubility (g/100 g of solvent):

tetrahydrofuran: 0.084 (10°C) [Ref.]
water: 0.034 [Ref.]

Density:

1.52 (-142°C, g/cm3)
0.00342 (20°C, g/cm3)

Vapour pressure (Torr):

1 (-163.5°C)
10 (-145.6°C)
100 (-120.8°C)

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

    90.8 (g)

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

    113.2 (g)

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

    217.1 (g)

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

    45.02 (g)

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

    0.84

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

    14.1

    References:

    1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-65
    2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 353-354 [Russian]
    3. Давыдов В.И. Германий. - М.: Металлургия, 1964. - pp. 112-114 [Russian]
    4. Девятых Г.Г., Зорин А.Д. Летучие неорганические гидриды особой чистоты. - М.: Наука, 1974 [Russian]
    5. Жигач А.Ф., Стасиневич Д.С. Химия гидридов. - Л.: Химия, 1969. - pp. 601-608 [Russian]
    6. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 641 [Russian]
    7. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 624 [Russian]
    8. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 62 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru