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Properties of substance:

zinc bromide

Group of substances:

inorganic

Physical appearance:

colorless tetragonal crystals

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

Br2Zn

Structural formula as text:

ZnBr2

Molar/atomic mass: 225.19

Melting point (°C):

394

Boiling point (°C):

670

Solubility (g/100 g of solvent):

acetone: 364 (20°C) [Ref.]
acetone: 381 (50°C) [Ref.]
ammonia liquid : very slightly soluble [Ref.]
benzonitrile: soluble [Ref.]
bromine liquid: 0.0146 (25°C) [Ref.]
carbon disulphide: insoluble [Ref.]
diethyl ether: 47.7 (-20°C) [Ref.]
diethyl ether: 92.3 (-10°C) [Ref.]
diethyl ether: 133.3 (0°C) [Ref.]
diethyl ether: 195.7 (10°C) [Ref.]
diethyl ether: 231.8 (20°C) [Ref.]
diethyl ether: 236 (25°C) [Ref.]
diethyl ether: 243.5 (35°C) [Ref.]
ethanol: soluble [Ref.]
ethyl acetate: soluble [Ref.]
methyl acetate: soluble [Ref.]
pyridine: 4.5 (18°C) [Ref.]
water: 389 (0°C) [Ref.]
water: 426 (15°C) [Ref.]
water: 470 (25°C) [Ref.]
water: 525 (30°C) [Ref.]
water: 592 (40°C) [Ref.]
water: 619 (60°C) [Ref.]
water: 644 (80°C) [Ref.]
water: 672 (100°C) [Ref.]

Properties of solutions:

50% (wt.), solvent - water
  Density (g/cm3) = 1.643 (20°)
68% (wt.), solvent - water
  Density (g/cm3) = 2.1027 (19,5°)

Hygroscopic:

yes

Density:

4.22 (20°C, g/cm3)

Surface tension (mN/m):

49.5 (500°C)
47.8 (600°C)
40.5 (670°C)

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

-329.7 (s)

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

-312.4 (s)

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

136 (s)

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

65.7 (s)

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

15.65

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

109.6

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

-185.8 (g)

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

300 (g)

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

59 (g)

References:

  1. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 1119-1120
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1575-1576
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 198 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 112 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 262, 794 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru