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Properties of substance:

gallium(III) chloride

Synonyms:

gallium trichloride

Group of substances:

inorganic

Physical appearance:

colorless needles crystals

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

Cl3Ga

Structural formula as text:

GaCl3

Molar/atomic mass: 176.08

Melting point (°C):

78

Boiling point (°C):

201

Solubility (g/100 g of solvent):

diethyl ether: very soluble [Ref.]
water: 180 (20°C) [Ref.]

Hygroscopic:

yes

Density:

2.47 (25°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    2Ga + 6HCl → 2GaCl3 + 3H2

Vapour pressure (Torr):

1 (48°C)
1.2 (50°C)
1.9 (55.1°C)
11.8 (80.1°C)
28.9 (100.1°C)
94.5 (130.4°C)
100 (133°C)
189.3 (151°C)
351.4 (171.3°C)
608.5 (191.2°C)
771.7 (200.8°C)

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

-524.7 (s)

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

-454.8 (s)

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

142 (s)

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

11.5

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

-444.3 (g)

References:

  1. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 26-27
  2. Journal of the American Chemical Society. - 1940. - Vol. 62, No. 6. - pp. 1578-1583 [DOI: 10.1021/ja01863a070]
  3. Дымов А.М., Савостин А.П. Аналитическая химия галлия. - М.: Наука, 1958. - pp. 19 [Russian]
  4. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 64 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 61 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru