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Properties of substance:

nickel(II) hydroxide

Group of substances:

inorganic

Physical appearance:

trigonal crystals

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

H2NiO2

Structural formula as text:

Ni(OH)2

Molar/atomic mass: 92.71

Decomposition temperature (°C):

230

Solubility (g/100 g of solvent):

1-pentylamine: insoluble [Ref.]
methylamine: insoluble [Ref.]
water: 0.00127 (20°C) [Ref.]

Density:

4.1 (20°C, g/cm3)

Dissociation:

pKb (2) = 4.6 (30°C, water)

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

-543.5 (s)

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

-458.3 (s)

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

79.9 (s)

References:

  1. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. - 2015. - Vol. 471, No. 2174. - pp. 20140792-1 - 20140792-65 [DOI: 10.1098/rspa.2014.0792]
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1347
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 357 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 87 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru