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Properties of substance:

ruthenium

Group of substances:

inorganic

Physical appearance:

hexagonal metal

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

Ru

Structural formula as text:

Ru

Molar/atomic mass: 101.07

Melting point (°C):

2250

Boiling point (°C):

4200

Solubility (g/100 g of solvent):

diethyl ether: insoluble [Ref.]
ethanol: insoluble [Ref.]
mercury: insoluble [Ref.]
water: insoluble [Ref.]

Numerical data:

Year of discovery: 1843
Superconducting temperature (K): 0.493

Density:

12.4 (20°C, g/cm3)

Vapour pressure (Torr):

0.1 (2655°C)
1 (2940°C)
10 (3290°C)
100 (3730°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)):

28.5 (s)

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

24.1 (s)

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

24

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

602

References:

  1. Автократова Т.Д. Аналитическая химия рутения. - М.: ИАН СССР, 1962. - pp. 9-10 [Russian]
  2. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
  3. Звягинцев О.Е., Колбин Н.И., Рябов А.Н., Автократова Т.Д., Горюнов А.А. Химия рутения. - М.: Наука, 1965 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 94 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru