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Properties of substance:

iron(II) disulfide



skc-file

Group of substances:

inorganic

Physical appearance:

cubic crystals

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

FeS2

Structural formula as text:

FeS2

Molar/atomic mass: 119.97

Melting point (°C):

1700

Solubility (g/100 g of solvent):

water: 0.00049 (20°C) [Ref.]

Density:

5.03 (20°C, g/cm3)

Reactions:

  1. [Ref.1]
    4FeS2 + 11O2 → 2Fe2O3 + 8SO2

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

-163.2 (s)

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

-151.8 (s)

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

52.93 (s)

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

62.17 (s)

References:

  1. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 64 [Russian]
  2. Реми Г. Курс неорганической химии. - Т.2. - М., 1966. - pp. 296 [Russian]
  3. Справочник сернокислотчика. - Под ред. Малина К.М. - М.: Химия, 1971. - pp. 55-56 [Russian]
  4. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 200 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru