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Properties of substance:

lead


Physical appearance:

gray cubic metal

Empirical formula (Hill's system):

Pb

Structural formula:

Pb

Molar/atomic mass: 207.2

Melting point (°C):

327.4

Boiling point (°C):

1745

Solubility (g/100 g of solvent):

water: 0.0000311 [Ref.]
mercury: 1.32 (18°C) [Ref.]

Properties:

Superconducting temperature (K): 7.1999

Density:

11.336 (20°C, g/cm3)
10.686 (327.4°C, d4)

Vapour pressure (Torr):

1 (981°C)

    Electrode potential:

    Pb4+ + 2e- → Pb2+, E = 1.694 V (water, 25°C)
    Pb4+ + e- → Pb3+, E = 1.8 V (water, 25°C)

    Surface tension (mN/m):

    445 (350°C)

    Speed sound (m/s):

    1020 (20°C, aggregative state - crystals, в стержне)

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

    0 (s)

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

    0 (s)

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

    64.81 (s)

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

    26.44 (s)

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

    4.77

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

    177.7

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

    195.1 (g)

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

    175.3 (g)

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

    20.8 (g)

    References:

    1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1364-1365
    2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 350
    3. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51
    4. Неорганические синтезы. - Сб. 1. - М.: ИИЛ, 1951. - pp. 10
    5. Полянский Н.Г. Свинец. - М.: Наука, 1986. - pp. 18-20
    6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 94
    7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 596
    8. Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 595, 598
    9. Успехи химии. - 1997. - Т.66, №2. - pp. 112
    10. Химическая энциклопедия. - Т.4. - М.: Советская энциклопедия, 1995. - pp. 299-301
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru