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Properties of substance:

germanium(IV) oxide

Group of substances:

inorganic

Physical appearance:

white tetragonal crystals

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

GeO2

Structural formula as text:

GeO2

Molar/atomic mass: 104.59

Melting point (°C):

1086

Solubility (g/100 g of solvent):

water: insoluble [Ref.]

Density:

6.24 (20°C, g/cm3)

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

-580.15 (s)

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

-521.6 (s)

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

39.7 (s)

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

50.17 (s)

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

21.1

References:

  1. Назаренко В.А. Аналитическая химия германия. - М.: Наука, 1973. - pp. 19 [Russian]
  2. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 630 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 61 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 54-55 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru