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Properties of substance:

potassium tungstate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

K2O4W

Structural formula as text:

K2WO4

Molar/atomic mass: 326.03

Melting point (°C):

923

Decomposition temperature (°C):

1000

Solubility (g/100 g of solvent):

water: 317.5 (18°C) [Ref.]

Hygroscopic:

yes

Density:

3.11 (20°C, g/cm3)

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

-1580 (s)

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

170 (s)

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

31

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 126-127 [Russian]
  2. Каров З.Г., Мохосоев М.В. Растворимость и свойства растворов соединений молибдена и вольфрама. - Новосибирск: ВО Наука, 1993. - pp. 334-338 [Russian]
  3. Сонгина О.А. Редкие металлы. - 3 изд. - М.: Металлургия, 1964. - pp. 60 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru