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Properties of substance:

cobalt(II) bromide

Group of substances:

inorganic

Physical appearance:

green hexagonal crystals

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

Br2Co

Structural formula as text:

CoBr2

Molar/atomic mass: 218.75

Melting point (°C):

678

Boiling point (°C):

927

Solubility (g/100 g of solvent):

acetone: 65 (25°C) [Ref.]
acetone: 92.4 (40°C) [Ref.]
diethyl ether: sparingly soluble [Ref.]
ethanol: 123.2 (65°C) [Ref.]
ethanol abs.: 70.6 (10°C) [Ref.]
ethanol abs.: 77.1 (20°C) [Ref.]
ethanol abs.: 84.9 (30°C) [Ref.]
ethanol abs.: 95.9 (40°C) [Ref.]
ethanol abs.: 105 (50°C) [Ref.]
ethanol abs.: 120.8 (60°C) [Ref.]
ethanol abs.: 127.1 (70°C) [Ref.]
ethanol abs.: 129.4 (80°C) [Ref.]
ethyl acetate: difficulty soluble [Ref.]
methanol: 43 (20°C) [Ref.]
methanol: 58.6 (30°C) [Ref.]
methanol: 80 (35°C) [Ref.]
methanol: 94.3 (37°C) [Ref.]
methanol: 124.8 (40°C) [Ref.]
methanol: 141.9 (50°C) [Ref.]
methanol: 153.1 (60°C) [Ref.]
methanol: 169 (70°C) [Ref.]
methanol: 190.6 (80°C) [Ref.]
methyl acetate: 10.3 (18°C) [Ref.]
water: 91.9 (0°C) [Ref.]
water: 119.1 (35°C) [Ref.]
water: 257 (100°C) [Ref.]

Density:

4.91 (20°C, g/cm3)

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

-232.2 (s)

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

-210.5 (s)

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

135.6 (s)

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

79.66 (s)

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

2 (g)

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

321 (g)

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

59.4 (g)

Neel temperature (K):

19

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 400-402
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 140-141 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 73 [Russian]
  4. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 352 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1007-1008 [Russian]
  6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 96-97 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru