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Properties of substance:

mercury(I) bromide

Group of substances:

inorganic

Physical appearance:

colorless tetragonal crystals

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

Br2Hg2

Structural formula as text:

Hg2Br2

Molar/atomic mass: 560.99

Sublimation point (°C):

392.5

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: insoluble [Ref.]
water: 0.0000039 (25°C) [Ref.]

Density:

7.3 (20°C, g/cm3)

Vapour pressure (Torr):

0.1 (142.6°C)
1 (187.1°C)
10 (242.2°C)
100 (312.5°C)

Dissociation:

pKsp (1) = 22.28 (25°C, water)

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

-207.1 (s)

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

-181.3 (s)

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

217.7 (s)

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

88.7 (s)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 606
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 92 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru