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Properties of substance:

tellurium dioxide

Group of substances:

inorganic

Physical appearance:

white rhombic crystals

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

O2Te

Structural formula as text:

TeO2

Molar/atomic mass: 159.6

Melting point (°C):

733

Boiling point (°C):

1257

Solubility (g/100 g of solvent):

sulfuric acid: insoluble [Ref.]
water: 0.00067 (20°C) [Ref.]

Vapour pressure (Torr):

0.1 (731°C)
1 (830°C)
10 (949°C)
100 (1097°C)

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

-322 (s)

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

59 (s)

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

64 (s)

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

29.5

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

205

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

-52 (g)

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

273 (g)

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

44.4 (g)

References:

  1. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 360 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 103 [Russian]
  3. Чижиков Д.М., Счастливый В.П. Теллур и теллуриды. - М.: Наука, 1966. - pp. 230-232 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru