FeAsO4-

Formula : FeAsO4-

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
194.766 -26.058 (Ref.: 07mar/acc) Marini L, Accornero M (2007) Prediction of the thermodynamic properties of metal-arsenate and metal-arsenite aqueous complexes to high temperatures and pressures and some geological consequences. Environ Geol 52:1343-1363 -781019 (Ref.: 07mar/acc) Marini L, Accornero M (2007) Prediction of the thermodynamic properties of metal-arsenate and metal-arsenite aqueous complexes to high temperatures and pressures and some geological consequences. Environ Geol 52:1343-1363 -914549 (Ref.: Internal calculation) 90.793 (Ref.: 07mar/acc) Marini L, Accornero M (2007) Prediction of the thermodynamic properties of metal-arsenate and metal-arsenite aqueous complexes to high temperatures and pressures and some geological consequences. Environ Geol 52:1343-1363 -341.95 (Ref.: 07mar/acc) Marini L, Accornero M (2007) Prediction of the thermodynamic properties of metal-arsenate and metal-arsenite aqueous complexes to high temperatures and pressures and some geological consequences. Environ Geol 52:1343-1363
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
-5.7124 -46.5181 43.1375 -9.7044 -171.8790 -61.7722 5.4108
Reaction properties

H2AsO4- + Fe+2 ⇌ FeAsO4- + 2H+

298.15 K, 1 bar log10K: -10.98 ΔH°r:85100 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -12.41 -10.98 -9.51 -8.33 -7.34 -6.69 -6.23 -5.85
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
249.181984 0.034100 -13982.836708 -90.834371 118561.732073