Fe2(OH)2+4

Formula : Fe2(OH)2+4

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
145.709 -490173 (Ref.: 07ste) Stefansson A. (2007) Iron(III) hydrolysis at 25C. Environ. Sci. Technol. 2007, 41, 6117-6123 -613180 (Ref.: 76bae/mes) Baes Jr. C.F., and Mesmer R.E., 1976. The Hydrolysis of Cations. Wiley Interscience, 489 pp. -283.455 (Ref.: Internal calculation)
HKF coefficients
a1·10
J·mol-1·bar-1
 a2·10-2
J·mol-1
 a3
J·K·mol-1·bar-1
 a4·10-4
J·K·mol-1
 c1
J·mol-1·K-1
 c2·10-4
J·K·mol-1
 ω·10-5
J·mol-1
Reaction properties

2Fe+3 + 2H2O ⇌ Fe2(OH)2+4 + 2H+

298.15 K, 1 bar log10K: -2.92 ΔH°r:56480 J·mol-1 (Ref.: 76bae/mes) Baes Jr. C.F., and Mesmer R.E., 1976. The Hydrolysis of Cations. Wiley Interscience, 489 pp.
T(°C) 0 25 60 100 150 200 250 300
log10K -3.84 -2.92 -1.91 -1.04 -0.21 0.50 1.21 2.02
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
985.616660 0.154631 -53189.668525 -357.984720 2628316.999885