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Properties of substance:

cobalt(II) oxide

Group of substances:

inorganic

Physical appearance:

grayish-green cubic crystals

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

CoO

Structural formula as text:

CoO

Molar/atomic mass: 74.93

Melting point (°C):

1935

Decomposition temperature (°C):

2800

Solubility (g/100 g of solvent):

ethanol: insoluble [Ref.]
water: insoluble [Ref.]

Density:

6 (20°C, g/cm3)

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

-239.3 (s)

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

-213.4 (s)

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

43.9 (s)

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

55.23 (s)

Neel temperature (K):

291

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 142-143 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 73 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru