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Properties of substance:

Group of substances:

inorganic

Physical appearance:

green rhombic crystals

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

H14NiO11S

Structural formula as text:

NiSO4 * 7H2O

Molar/atomic mass: 280.86

Decomposition temperature (°C):

31.5

Solubility (g/100 g of solvent):

ethanol abs.: 1.4 (4°C) [Ref.]
methanol: soluble [Ref.]
water: 101 (20°C) [Ref.]

Density:

1.948 (25°C, g/cm3)

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

-2977.4 (s)

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

-2463.3 (s)

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

378.9 (s)

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

364.8 (s)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1347-1351
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 87 [Russian]
  3. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 454-455 [Russian]
  4. Энциклопедия для детей. - Т.17: Химия. - М.: Аванта+, 2004. - pp. 166 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru