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Properties of substance:

silver(I) fluoride

Synonyms:

silver fluoride

Group of substances:

inorganic

Physical appearance:

cubic crystals

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

AgF

Structural formula as text:

AgF

Molar/atomic mass: 126.87

Melting point (°C):

435

Solubility (g/100 g of solvent):

acetic acid: soluble [Ref.]
acetonitrile: soluble [Ref.]
ammonia liquid : very slightly soluble [Ref.]
bromine trifluoride: 3.33 (25°C) [Ref.]
bromine trifluoride: 4.25 (70°C) [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: sparingly soluble [Ref.]
hydrogen fluoride : 27.2 (-25°C) [Ref.]
hydrogen fluoride : 32 (-15°C) [Ref.]
hydrogen fluoride : 43.8 (-9.8°C) [Ref.]
hydrogen fluoride : 83.2 (11.9°C) [Ref.]
methanol: 1.9 [Ref.]
sulfur dioxide: insoluble [Ref.]
water: 85.8 (0°C) [Ref.]
water: 119.8 (10°C) [Ref.]
water: 135 (15°C) [Ref.]
water: 172 (20°C) [Ref.]
water: 179.6 (25°C) [Ref.]
water: 190.1 (30°C) [Ref.]
water: 216 (50°C) [Ref.]

Properties of solutions:

1% (wt.), solvent - water
  Density (g/cm3) = 1.0088 (18°)
10% (wt.), solvent - water
  Density (g/cm3) = 1.1071 (18°)
50% (wt.), solvent - water
  Density (g/cm3) = 1.85 (18°)

Hygroscopic:

yes

Numerical data:

Interatomic distances (in pm): 198.32

Density:

5.852 (15°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    Ag2O + 2HF → 2AgF + H2O
  2. [Ref.1aster]
    Ag2CO3 + 2HF → 2AgF + H2O + CO2

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

17

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

185

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-204.602 (s) [Ref.]
7.113 (g) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-186.595 (s) [Ref.]
-20.221 (g) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

83.68 (s) [Ref.]
235.752 (g) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

51.921 (s) [Ref.]
33.964 (g) [Ref.]

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 55
  2. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 259 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 99 [Russian]
  4. Рысс И.Г. Химия фтора и его неорганических соединений. - М., 1956. - pp. 563-566 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 197, 716 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru