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Properties of substance:

silver sulfate

Group of substances:

inorganic

Physical appearance:

white rhombic crystals

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

Ag2O4S

Structural formula as text:

Ag2SO4

Molar/atomic mass: 311.79

Melting point (°C):

660

Decomposition temperature (°C):

1085

Solubility (g/100 g of solvent):

1,4-dioxane: insoluble (25°C) [Ref.]
acetic acid: practically insoluble [Ref.]
acetonitrile: 0.0418 (25°C) [Ref.]
ethanol: insoluble [Ref.]
ethyl acetate: difficulty soluble [Ref.]
hydrogen fluoride : insoluble [Ref.]
methanol: insoluble [Ref.]
sulfur dioxide: insoluble [Ref.]
sulfuric acid: 25.44 (13°C) [Ref.]
sulfuric acid: 31.56 (24.5°C) [Ref.]
sulfuric acid: 36 (29.9°C) [Ref.]
sulfuric acid: 127.01 (96°C) [Ref.]
water: 0.57 (0°C) [Ref.]
water: 0.69 (10°C) [Ref.]
water: 0.8 (20°C) [Ref.]
water: 0.84 (25°C) [Ref.]
water: 0.89 (30°C) [Ref.]
water: 0.98 (40°C) [Ref.]
water: 1.15 (60°C) [Ref.]
water: 1.3 (80°C) [Ref.]
water: 1.41 (100°C) [Ref.]

Multicomponent solubility (in wt%):

water 87.714%, sulfuric acid 11.34%, silver sulfate 0.946%, 25 °C, separating phase: Ag2SO4 [Ref.]
water 20.24%, sulfuric acid 74.26%, silver sulfate 5.5%, 25 °C, separating phase: Ag2SO4 + β-AgHSO4 [Ref.]
water 14.96%, sulfuric acid 77.9%, silver sulfate 7.14%, 25 °C, separating phase: AgHSO4 [Ref.]
water 93.44%, potassium sulfate 5.62%, silver sulfate 0.94%, 33 °C [Ref.]
water 87.023%, potassium sulfate 11.8%, silver sulfate 1.177%, 33 °C [Ref.]

Density:

5.45 (29°C, g/cm3)

Dissociation:

pKsp (0) = 4.7 (20°C, water)

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

-717.2 (s)

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

-619.6 (s)

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

199.8 (s)

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

131.4 (s)

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

17.9

References:

  1. Dictionary of Inorganic Compounds. - Vol. 1: Ac-C10, part 1. - Springer Science+Business Media Dordrecht, 1992. - pp. 14
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 73-76
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 267 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 98-99 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 201 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru