NiAsO4-

Formula : NiAsO4-

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
197.613 -27.005 (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 -737656 (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 -884296 (Ref.: Internal calculation) 49.371 (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 -369.17 (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
-6.0384 -47.3139 43.4793 -9.6717 -187.3470 -65.0110 6.0392
Reaction properties

H2AsO4- + Ni+2 ⇌ NiAsO4- + 2H+

298.15 K, 1 bar log10K: -10.67 ΔH°r:84853 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -12.10 -10.67 -9.20 -8.04 -7.08 -6.45 -6.03 -5.70
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
224.806030 0.029293 -12692.869149 -81.674589 41399.361120