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Properties of substance:

gallium(III) hydroxide

Group of substances:

inorganic

Physical appearance:

amorphous substance

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

H3GaO3

Structural formula as text:

Ga(OH)3

Molar/atomic mass: 120.75

Decomposition temperature (°C):

80-400

Solubility (g/100 g of solvent):

water: 0.0000000076 (20°C) [Ref.]

Dissociation:

pKa (2) = 10.3 (18°C, water)
pKa (3) = 11.7 (18°C, water)
pKb (2) = 10.8 (18°C, water)
pKb (3) = 11.4 (18°C, water)

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

-964.4 (s)

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

-831.3 (s)

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

100 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-12
  2. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 63 [Russian]
  3. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 118 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru