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Properties of substance:

copper(II) sulfate

Synonyms:

cupric sulfate

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

CuO4S

Structural formula as text:

CuSO4

Molar/atomic mass: 159.609

Decomposition temperature (°C):

650

CAS №: 7758-98-7

Solubility (g/100 g of solvent):

acetic acid: practically insoluble [Ref.]
acetone: insoluble [Ref.]
ammonia liquid : insoluble [Ref.]
benzonitrile: insoluble [Ref.]
carbon dioxide liquid: insoluble [Ref.]
deuterium oxide: 13.3 (5°C) [Ref.]
deuterium oxide: 18.5 (20°C) [Ref.]
deuterium oxide: 32.5 (50°C) [Ref.]
deuterium oxide: 76.1 (100°C) [Ref.]
dimethylformamide: 1.8 (25°C) [Ref.]
ethanol abs.: insoluble [Ref.]
ethyl acetate: insoluble [Ref.]
ethylene glycol : 0.5 (30°C) [Ref.]
glycerol: 30.3 (16°C) [Ref.]
hydrogen fluoride : insoluble [Ref.]
methanol: 0.76 (15°C) [Ref.]
methanol: 1.05 (18°C) [Ref.]
methanol: 1.4 (25°C) [Ref.]
methanol: 2.15 (35°C) [Ref.]
methanol: 2.9 (45°C) [Ref.]
methyl acetate: insoluble [Ref.]
methylamine: insoluble [Ref.]
sulfuric acid: 0.13 (25°C) [Ref.]
sulfuric acid: 0.16 (37°C) [Ref.]
sulfuric acid: 0.29 (69°C) [Ref.]
water: 14.3 (0°C) [Ref.]
water: 17.2 (10°C) [Ref.]
water: 20.5 (20°C) [Ref.]
water: 22.3 (25°C) [Ref.]
water: 24.4 (30°C) [Ref.]
water: 28.7 (40°C) [Ref.]
water: 33.7 (50°C) [Ref.]
water: 39.5 (60°C) [Ref.]
water: 55.5 (80°C) [Ref.]
water: 77 (100°C) [Ref.]
water: 82.5 (150°C) [Ref.]

Properties of solutions:

10% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 1.543 (20°)
  Density (g/cm3) = 1.107 (20°)
  Index of refraction = 1.352 (20°)
  Freezing point (°C) = -1.18
  Electrical Conductivity (mS/cm) = 32.2 (20°)

Hygroscopic:

yes

Density:

3.6 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1, Ref.2]
    5Cu + 4H2SO4 → 3CuSO4 + Cu2S + 4H2O
  2. [Ref.1]
    Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O

Reactions:

  1. [Ref.1aster]
    4CuSO4 + 2Na2SiO3 + 6H2O → Cu4(OH)6SO4 + 2H2SiO3 + 2Na2SO4 + H2SO4
  2. [Ref.1]
    Fe + CuSO4 → Cu + FeSO4

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

-770.9 (s)

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

-661.8 (s)

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

109 (s)

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

98.87 (s)

Neel temperature (K):

54.3

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-62
  2. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 962-967
  3. Journal of the Chemical Society. - 1929. - pp. 1440-1443 [DOI: 10.1039/JR9290001440]
  4. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 497-516
  5. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 274 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 80 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 186-187, 709 [Russian]
  8. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 671 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru