Fe(OH)2

Formula : Fe(OH)2

Family: 
Hydroxides

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
89.862 24.480 (Ref.: 01mer/vie) Lionel Mercury, Philippe Vieillard, Yves Tardy, 2001. Thermodynamics of ice polymorphs and 'ice-like' water in hydrates and hydroxides. Applied Geochemistry, Volume 16, Issue 2, February 2001, Pages 161-181 -491462 (Ref.: 53leu/kho) Leussing, D.L., Kholtoff, I.M. (1953) The solubility product of ferrous and the ionization of aquo-ferrous ion. J. Amer. Chem. Soc. 75, 2476-2479. -573539 (Ref.: Internal calculation) 87.864 (Ref.: 04chi) Chivot J., 2004. Thermodynamique des produits de corrosion. Fonctions thermodynamiques de solubilite, diagrammes E-pH des systemes Fe-H2O, Fe-CO2-H2O, Fe-S-H2O, Cr-H2O et Ni-H2O en fonction de la temperature. Document ANDRA, Collection Sciences et Techniques. 97.08 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
92.42 33.67 -4.78 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.
Reaction properties

Fe(OH)2 + 2H+ ⇌ Fe+2 + 2H2O

298.15 K, 1 bar log10K: 12.85 ΔH°r:-88121 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K 14.27 12.85 11.24 9.78 8.36 7.23 6.27 5.42
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-332.999839 -0.050832 21902.570379 120.423362 -927517.962493