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Properties of substance:

uranyl fluoride

Group of substances:

inorganic

Physical appearance:

yellow rhombic crystals

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

F2O2U

Structural formula as text:

UO2F2

Molar/atomic mass: 308.025

Decomposition temperature (°C):

800

Solubility (g/100 g of solvent):

amyl alcohol: insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: soluble [Ref.]
methanol: soluble [Ref.]
water: 190.7 (25°C) [Ref.]
water: 206 (35°C) [Ref.]
water: 286.1 (100°C) [Ref.]

Properties of solutions:

60% (wt.), solvent - water
  Density (g/cm3) = 2.1 (25°)

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

-1653.5 (s)

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

-1557.4 (s)

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

135.6 (s)

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

103.2 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-11
  2. Браун Д. Галогениды лантаноидов и актиноидов. - М.: Атомиздат, 1972. - pp. 35-37 [Russian]
  3. Галкин Н.П., Майоров А.А., Верятин У.Д., Судариков Б.Н., Николаев Н.С., Шишков Ю.Д., Крутиков А.Б. Химия и технология фтористых соединений урана. - М.: ГИЛОАНТ, 1961. - pp. 47-50 [Russian]
  4. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 183 [Russian]
  5. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 101 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru