Periodic table of elements

Ferric(II) hydroxide [Fe(OH)2]

SOLUBILITY:
water [H2O]: 0,0000732 (25°)

PROPERTIES:
light-green trigonal crystals
M (molar mass): 89,860 g/mol
ТDT (decomposing temperature): 150 °C
Decomp. to (names of the decomposition products): железа(II,III) оксид, вода, водород
D (density): 3,4 (20°, g/cm3, s.)
ΔH°298 (Standard molar enthalpy of reaction at 298 К): -561,7 (s) kJ/mol
ΔG°298 (standard molar Gibbs energy of reaction at 298 К): -479,7 (s) kJ/mol
298 (standard molar entropy at 298 К): 88 (s) J/(mol•К)
p (standard molar heat capacity): 97,1 (s) J/(mol•К)
pSP (solubility product index): 15 (20°, water)
pKb2 (acid dissociation constant): 3,89 (25°, water)

LITERARY REFERENCES:
• Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1 - New York: D. Van Nostrand Company, 1940. – P. 535
• Grinvud N., Ernsho A. Himiya elementov. - T.2. - M.: BINOM. Laboratoriya znaniy, 2008. – P. 409
• Rabinovich V.A., Havin Z.Ya. Kratkiy himicheskiy spravochnik. - L.: Himiya, 1977. – P. 62

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