Pm⁺⁴

Formula : Pm⁺⁴

Dernière mise à jour le 25.01.2021

Individual properties (298.15 K)

M g·mol^-1	V° cm³·mol^-1	ΔGº_f J·mol^-1	ΔHº_f J·mol^-1	Sº J·mol^-1·k^-1	C_P J·mol^-1·K^-1
144.913	-53.578 (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.	-143093 (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.	-245324 (Ref.: Internal calculation)	-417.145 (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.	15.95 (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
-17.9226	-76.2823	53.9548	-8.4734	168.2780	-12.5261	15.4118

Reaction properties

0.25O₂ + H⁺ + Pm⁺³ ⇌ Pm⁺⁴ + 0.5H₂O

298.15 K, 1 bar log₁₀K: -69.25 ΔH°_r:335579 J·mol^-1

T(°C)	0	25	60	100	150	200	250	300
log₁₀K	-74.59	-69.25	-63.02	-57.26	-51.53	-46.97	-43.28	-40.26

log₁₀K(T) = A + B·T + C·T^-1 + D·log₁₀(T) + E·T⁻² (T in Kelvin)

A	B	C	D	E
-106.272078	-0.018768	-15494.015569	37.442915	172193.498182