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Properties of substance:

iron(II) sulfide

Group of substances:

inorganic

Physical appearance:

hexagonal crystals

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

FeS

Structural formula as text:

FeS

Molar/atomic mass: 87.91

Melting point (°C):

1193

Solubility (g/100 g of solvent):

hydrazine: reaction 9 (20°C) [Ref.]
iron fused: miscible [Ref.]
water: 0.000616 (18°C) [Ref.]

Density:

4.7 (20°C, g/cm3)

Dissociation:

pKsp (0) = 17.3 (20°C, water)

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

-100.4 (s)

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

-100.8 (s)

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

60.29 (s)

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

50.54 (s)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 538
  2. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 363 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 63 [Russian]
  4. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 137 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru