GdO2-

Formula : GdO2-

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
189.249 21.222 (Ref.: 95haa/sho) Haas, J.R., Shock, E.L., and Sassani, D.C., 1995, Rare earth elements in hydrothermal systems: Estimates of standard partial molal thermodynamic properties of aqueous complexes of the rare earth elements at high pressures and temperatures: Geochim. Cosmo. Acta, v. 59, no. 21, pp. 4329-4350. -941400 (Ref.: 95haa/sho) Haas, J.R., Shock, E.L., and Sassani, D.C., 1995, Rare earth elements in hydrothermal systems: Estimates of standard partial molal thermodynamic properties of aqueous complexes of the rare earth elements at high pressures and temperatures: Geochim. Cosmo. Acta, v. 59, no. 21, pp. 4329-4350. -994529 (Ref.: Internal calculation) 160.247 (Ref.: 95haa/sho) Haas, J.R., Shock, E.L., and Sassani, D.C., 1995, Rare earth elements in hydrothermal systems: Estimates of standard partial molal thermodynamic properties of aqueous complexes of the rare earth elements at high pressures and temperatures: Geochim. Cosmo. Acta, v. 59, no. 21, pp. 4329-4350. -470.16 (Ref.: 95haa/sho) Haas, J.R., Shock, E.L., and Sassani, D.C., 1995, Rare earth elements in hydrothermal systems: Estimates of standard partial molal thermodynamic properties of aqueous complexes of the rare earth elements at high pressures and temperatures: Geochim. Cosmo. Acta, v. 59, no. 21, pp. 4329-4350.
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
21.0639 18.8744 16.6393 -12.4072 -211.8090 -109.3450 4.3911
Reaction properties

Gd+3 + 2H2O ⇌ GdO2- + 4H+

298.15 K, 1 bar log10K: -34.80 ΔH°r:263904 J·mol-1 (Ref.: 95haa/sho) Haas, J.R., Shock, E.L., and Sassani, D.C., 1995, Rare earth elements in hydrothermal systems: Estimates of standard partial molal thermodynamic properties of aqueous complexes of the rare earth elements at high pressures and temperatures: Geochim. Cosmo. Acta, v. 59, no. 21, pp. 4329-4350.
T(°C) 0 25 60 100 150 200 250 300
log10K -39.17 -34.80 -30.04 -25.94 -22.16 -19.38 -17.29 -15.70
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-183.902060 -0.033109 2455.350758 68.032643 -1564453.635663