Fe(OH)4-

Formula : Fe(OH)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
123.876 57.080 (Ref.: 99dia/sch) Diakonov I.I., Schott J., Martin F., Harrichourry J.C. and Escalier J., 1999. Iron(III) solubility and speciation in aqueous solutions. experimental study and modelling: part 1. hematite solubility from 60 to 300C in NaOH-NaCl solutions and thermodynamic properties of Fe(OH)4-(aq) - Revised equation od state for the standard partial properties of ions and electrolytes. Geochimica et Cosmochimica Acta, Volume 63, Number 15, August 1999 , pp. 2247-2261(15) -841548 (Ref.: 76bae/mes) Baes Jr. C.F., and Mesmer R.E., 1976. The Hydrolysis of Cations. Wiley Interscience, 489 pp. -1047338 (Ref.: Internal calculation) 74.100 (Ref.: 99dia/sch) Diakonov I.I., Schott J., Martin F., Harrichourry J.C. and Escalier J., 1999. Iron(III) solubility and speciation in aqueous solutions. experimental study and modelling: part 1. hematite solubility from 60 to 300C in NaOH-NaCl solutions and thermodynamic properties of Fe(OH)4-(aq) - Revised equation od state for the standard partial properties of ions and electrolytes. Geochimica et Cosmochimica Acta, Volume 63, Number 15, August 1999 , pp. 2247-2261(15) 109.48 (Ref.: 99dia/sch) Diakonov I.I., Schott J., Martin F., Harrichourry J.C. and Escalier J., 1999. Iron(III) solubility and speciation in aqueous solutions. experimental study and modelling: part 1. hematite solubility from 60 to 300C in NaOH-NaCl solutions and thermodynamic properties of Fe(OH)4-(aq) - Revised equation od state for the standard partial properties of ions and electrolytes. Geochimica et Cosmochimica Acta, Volume 63, Number 15, August 1999 , pp. 2247-2261(15)
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
41.5417 68.9205 -3.0363 -14.4766 375.6750 -113.7290 4.2614
Reaction properties

Fe+3 + 4H2O ⇌ Fe(OH)4- + 4H+

298.15 K, 1 bar log10K: -21.60 ΔH°r:144982 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -23.97 -21.60 -18.96 -16.55 -14.15 -12.20 -10.56 -9.17
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-354.124447 -0.033997 17227.197202 123.185357 -1772353.730925