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Properties of substance:

lead(II) sulfide

Group of substances:

inorganic

Physical appearance:

cubic crystals

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

PbS

Structural formula as text:

PbS

Molar/atomic mass: 239.3

Melting point (°C):

1077

Boiling point (°C):

1281

Solubility (g/100 g of solvent):

dimethylformamide: 0.15 (25°C) [Ref.]
water: 0.000068 (25°C) [Ref.]

Numerical data:

Hardness on the Mohs’ scale: 2.5

Density:

7.59 (20°C, g/cm3)

Vapour pressure (Torr):

0.1 (755°C)
1 (853°C)
10 (967°C)
100 (1108°C)

Dipole moment (D):

3.59

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):

-98.8 (s)

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

91.2 (s)

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

49.79 (s)

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

122 (g)

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

251.3 (g)

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

35.1 (g)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1408
  2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 366 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 639 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 95 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru