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Properties of substance:

lead(II) oxide litharge

Group of substances:

inorganic

Physical appearance:

red tetragonal crystals

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

OPb

Structural formula as text:

PbO

Molar/atomic mass: 223.2

Melting point (°C):

886

Boiling point (°C):

1535

Solubility (g/100 g of solvent):

hydrazine: 1 (20°C) [Ref.]
hydrogen fluoride : reaction [Ref.]
water: 0.0068 (18°C) [Ref.]

Density:

9.51 (20°C, g/cm3)

Vapour pressure (Torr):

0.1 (834°C)
1 (944°C)
10 (1085°C)
100 (1265°C)

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

-219.3 (s)

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

-189.1 (s)

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

66.1 (s)

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

45.81 (s)

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

25.5

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

228

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

69 (g)

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

239.9 (g)

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

32.6 (g)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1405
  2. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 630-631 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 95 [Russian]
  4. Реми Г. Курс неорганической химии. - Т.1. - М., 1963. - pp. 590-592 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru