Pd(OH)2(s)

Formula : Pd(OH)2

Family: 
Hydroxides
Space group: 
Unknown
Dana class: 
Unknown
High temperature: 
Stable at room temperature.
Geological context: 
Occurs in oxidized zone of platine-bearing deposit, supergene mineral.

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
140.435 28.380 (Ref.: 98sas/sho) Sassani, D.C., and Shock, E.L., Solubility and Transport of Platinum-Group Elements in Supercritical fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-4266. -301248 (Ref.: 98sas/sho) Sassani, D.C., and Shock, E.L., Solubility and Transport of Platinum-Group Elements in Supercritical fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-4266. -385582 (Ref.: Internal calculation) 90.793 (Ref.: 98sas/sho) Sassani, D.C., and Shock, E.L., Solubility and Transport of Platinum-Group Elements in Supercritical fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-4266. 85.56 (Ref.: 98sas/sho) Sassani, D.C., and Shock, E.L., Solubility and Transport of Platinum-Group Elements in Supercritical fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-4266.
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
74.27 42.17 -1.14 (Ref.: 98sas/sho) Sassani, D.C., and Shock, E.L., Solubility and Transport of Platinum-Group Elements in Supercritical fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-4266.
Reaction properties

Pd(OH)2(s) + 2H+ ⇌ Pd+2 + 2H2O

298.15 K, 1 bar log10K: -0.62 ΔH°r:-8148 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -0.48 -0.62 -0.75 -0.84 -0.92 -0.97 -1.05 -1.19
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-340.507154 -0.051805 17918.515177 123.454992 -910639.276989