Periodic table of elements

Cobalt(II) hydroxide [Co(OH)2]

SOLUBILITY:
water [H2O]: 0,000318 (20°)

PROPERTIES:
pink trigonal crystals
M (molar mass): 92,950 g/mol
ТDT (decomposing temperature): 200 °C
Decomp. to (names of the decomposition products): кобальта оксид, вода
D (density): 3,6 (15°, g/cm3, s.)
ΔH°298 (Standard molar enthalpy of reaction at 298 К): -541 (s) kJ/mol
ΔG°298 (standard molar Gibbs energy of reaction at 298 К): -456,1 (s) kJ/mol
298 (standard molar entropy at 298 К): 82 (s) J/(mol•К)
pSP (solubility product index): 15 (20°, water)
pKb2 (acid dissociation constant): 4,4 (25°, water)

LITERARY REFERENCES:
• Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1 - New York: D. Van Nostrand Company, 1940. – P. 431
• Rabinovich V.A., Havin Z.Ya. Kratkiy himicheskiy spravochnik. - L.: Himiya, 1977. – P. 73
• Chalyy V.P. Gidrookisi metallov (zakonomernosti obrazovaniya, sostav, struktura i svoystva). - Kiev: Naukova dumka, 1972. – P. 45-47

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