NiHAsO4

Formula : NiHAsO4

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
198.621 -5.689 (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 -776920 (Ref.: 05gam/bug) Gamsjager, H., Bugajski, J., Gajda, T., Lemire, R., 2005. Chemical Thermodynamics of Nickel. Elsevier Science. -956618 (Ref.: Internal calculation) -61.505 (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 -41.64 (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
4.0790 -22.6024 32.8691 -10.6930 1.1326 -21.0464 -0.1590
Reaction properties

H2AsO4- + Ni+2 ⇌ NiHAsO4 + H+

298.15 K, 1 bar log10K: -3.79 ΔH°r:12531 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -3.99 -3.79 -3.55 -3.33 -3.07 -2.78 -2.41 -1.84
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
895.429411 0.142717 -47837.870021 -327.565966 2597715.861713