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Properties of substance:

indium

Group of substances:

inorganic

Physical appearance:

tetragonal metal

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

In

Structural formula as text:

In

Molar/atomic mass: 114.82

Melting point (°C):

156.6

Boiling point (°C):

2109

Solubility (g/100 g of solvent):

mercury: 133.5 (25°C) [Ref.]
water: insoluble [Ref.]

Properties of solutions:

10% (wt.), solvent - mercury
  Density (g/cm3) = 12.533 (25°)
25% (wt.), solvent - mercury
  Density (g/cm3) = 11.224 (25°)
50% (wt.), solvent - mercury
  Density (g/cm3) = 9.4698 (25°)

Numerical data:

Year of discovery: 1863
Superconducting temperature (K): 3.405

Density:

7.362 (20°C, g/cm3)
7.023 (157°C, g/cm3)
5.763 (2109°C, g/cm3)

Vapour pressure (Torr):

0.01 (912°C)
0.1 (1042°C)
1 (1205°C)
10 (1414°C)
100 (1688°C)

    Electrode potential:

    In3+ + e- → In2+, E = -0.45 V (water, 25°C)
    In3+ + 3e- → In, E = -0.338 V (water, 25°C)
    In+ + e- → In, E = -0.18 V (water, 25°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)):

    57.82 (s)

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

    26.74 (s)

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

    3.26

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

    227.6

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

    238 (g)

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

    173.7 (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. 679
    2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 215 [Russian]
    3. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 50 [Russian]
    4. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 59-62 [Russian]
    5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 64 [Russian]
    6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 595 [Russian]
    7. Успехи химии. - 1997. - Т.66, №2. - pp. 112 [Russian]
    8. Федоров П.И., Акчурин Р.Х. Индий. - М.: Наука, 2000. - pp. 9-19 [Russian]
    9. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 226-227 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru