CoO2-2

Formula : CoO2-2

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
90.932 -22.780 (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. -264898 (Ref.: 98ply/zha) Plyasunova N. V., Zhang Y., and Muhammed M. (1998) Critical evaluation of thermodynamics of complex formation of metal ions in aqueous solutions. V. hydrolysis and hydroxo-complexes of Co2+ at 298.15 K. Hydrometallurgy 48(2), 153-169. -414774 (Ref.: Internal calculation) -136.817 (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. -116.99 (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
-0.2469 -33.1452 37.0451 -10.2567 91.4279 -39.6283 15.5344
Reaction properties

Co+2 + 2H2O ⇌ CoO2-2 + 4H+

298.15 K, 1 bar log10K: -46.42 ΔH°r:214485 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -49.91 -46.42 -42.55 -39.17 -36.04 -33.79 -32.23 -31.31
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-966.398319 -0.159896 41017.755272 349.766883 -3146858.366941