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Properties of substance:

silver oxalate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

C2Ag2O4

Structural formula as text:

Ag2C2O4

Molar/atomic mass: 303.74

Decomposition temperature (°C):

140

Solubility (g/100 g of solvent):

water: 0.0034 (18°C) [Ref.]
water: 0.00378 (21°C) [Ref.]
water: 0.00416 (25°C) [Ref.]

Density:

5.029 (4°C, g/cm3)

Reactions:

  1. [Ref.1, Ref.2]
    Ag2C2O4 → 2Ag + 2CO2

Dissociation:

pKsp (0) = 10.46 (20°C, water)

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

-673 (s)

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

209 (s)

References:

  1. Bretherick's Handbook of Reactive Chemical Hazards. - 6 ed., Vol. 1. - Butterworth-Heinemann, 1999. - pp. 1, 220
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 31
  3. Боуден Ф., Иоффе А. Быстрые реакции в твердых веществах. - М.: ИИЛ, 1962. - pp. 38-39 [Russian]
  4. Пятницкий И.В., Сухан В.В. Аналитическая химия серебра. - М.: Наука, 1975. - pp. 30 [Russian]
  5. Реми Г. Курс неорганической химии. - Т.2. - М., 1966. - pp. 435 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 201 [Russian]
  7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 208-209 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru