CoAsO4-

Formula : CoAsO4-

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
197.852 -26.521 (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 -741363 (Ref.: 95mir/kis) Mironova V.E., Kiselev V.P., Egizaryan M.B., Golovnev N.N., Pashkov G.L. (1995) Ion association in aqueous solutions of calcium arsenate. Russ. J. Inorg. Chem., 40, 1690-1691 -880818 (Ref.: Internal calculation) 73.638 (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 -346.07 (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
-5.8881 -46.9466 43.3216 -9.6868 -174.0230 -61.6872 5.6714
Reaction properties

H2AsO4- + Co+2 ⇌ CoAsO4- + 2H+

298.15 K, 1 bar log10K: -11.81 ΔH°r:86431 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -13.26 -11.81 -10.31 -9.11 -8.11 -7.45 -6.99 -6.62
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
239.483204 0.032348 -13569.818346 -87.460780 88584.941452