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Properties of substance:

chromium

Physical appearance:

gray cubic metal

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

Cr

Structural formula as text:

Cr

Molar/atomic mass: 51.996

Melting point (°C):

1890

Boiling point (°C):

2680

Solubility (g/100 g of solvent):

water: insoluble [Ref.]
lithium molten: 0.0025 (700°C) [Ref.]
sodium fused: 0.0002 (700°C) [Ref.]
mercury: 0.00000000003 (18°C) [Ref.]

Numerical data:

Year of discovery: 1797

Density:

7.19 (20°C, g/cm3)

Vapour pressure (Torr):

0.001 (1240°C)
0.1 (1513°C)
1 (1695°C)
10 (1922°C)
100 (2220°C)

    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):

    23.6 (s)

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

    23.3 (s)

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

    21

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

    338

    References:

    1. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 52
    2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 210-211
    3. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 62
    4. Неорганические синтезы. - Сб. 1. - М.: ИИЛ, 1951. - pp. 10
    5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 110
    6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 617
    7. Химическая энциклопедия. - Т.5. - М.: Советская энциклопедия, 1999. - pp. 308-310
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru