HNiO2-

Formula : HNiO2-

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
91.700 -24.363 (Ref.: 97asho/sas) Shock, E.L., Sassani, D.C., Willis, M., and Sverjensky, D.A., 1997, Inorganic species in geologic fluids: Correlations among standard molal thermodynamic properties of aqueous ions and hydroxide complexes: Geochim. Cosmo. Acta, v. 61, no. 5, pp. 907-950. -339848 (Ref.: 12bla) Blanc P., 2012, Mercury associated physical and chemical constants: updating of the THERMODDEM database, IMaHg project, rapport BRGM RP-61299-FR, 32p -502713 (Ref.: Internal calculation) -180.550 (Ref.: 12coo/oli) Cook, W.G., Olive, R.P., 2012. Pourbaix diagrams for the nickel-water system extended to high-subcritical and low-supercritical conditions. Corrosion Science 58, 284-290. 209.72 (Ref.: 97asho/sas) Shock, E.L., Sassani, D.C., Willis, M., and Sverjensky, D.A., 1997, Inorganic species in geologic fluids: Correlations among standard molal thermodynamic properties of aqueous ions and hydroxide complexes: Geochim. Cosmo. Acta, v. 61, no. 5, pp. 907-950.
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
-3.4070 -40.8438 40.0359 -9.9383 227.0090 28.2127 9.0642
Reaction properties

Ni+2 + 2H2O ⇌ HNiO2- + 3H+

298.15 K, 1 bar log10K: -31.50 ΔH°r:128446 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -33.53 -31.50 -29.11 -26.91 -24.74 -23.04 -21.71 -20.71
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-112.585821 -0.025265 -4274.716978 41.154062 99639.320306