Ar

Formula : Ar

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
39.948 31.540 (Ref.: 89bsho/hel, 01sch/sho) Shock E.L., Helgeson H.C. and Sverjensky D.A., 1989. Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Standard partial molal properties of inorganic neutral species. Geochim. Cosmochim. Acta, 53, pp. 2157-2183. AND Schulte M.D., Shock E.L. and Wood R.H., 2001. The temperature dependence of the standard-state thermodynamic properties of aqueous nonelectrolytes. Geochimica et Cosmochimica Acta, 65, 3919-3930 16318 (Ref.: 89bsho/hel, 01sch/sho) Shock E.L., Helgeson H.C. and Sverjensky D.A., 1989. Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Standard partial molal properties of inorganic neutral species. Geochim. Cosmochim. Acta, 53, pp. 2157-2183. AND Schulte M.D., Shock E.L. and Wood R.H., 2001. The temperature dependence of the standard-state thermodynamic properties of aqueous nonelectrolytes. Geochimica et Cosmochimica Acta, 65, 3919-3930 -12011 (Ref.: Internal calculation) 59.831 (Ref.: 89bsho/hel, 01sch/sho) Shock E.L., Helgeson H.C. and Sverjensky D.A., 1989. Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Standard partial molal properties of inorganic neutral species. Geochim. Cosmochim. Acta, 53, pp. 2157-2183. AND Schulte M.D., Shock E.L. and Wood R.H., 2001. The temperature dependence of the standard-state thermodynamic properties of aqueous nonelectrolytes. Geochimica et Cosmochimica Acta, 65, 3919-3930 156.58 (Ref.: 89bsho/hel, 01sch/sho) Shock E.L., Helgeson H.C. and Sverjensky D.A., 1989. Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Standard partial molal properties of inorganic neutral species. Geochim. Cosmochim. Acta, 53, pp. 2157-2183. AND Schulte M.D., Shock E.L. and Wood R.H., 2001. The temperature dependence of the standard-state thermodynamic properties of aqueous nonelectrolytes. Geochimica et Cosmochimica Acta, 65, 3919-3930
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
25.1053 28.7432 12.7608 -12.8156 131.3900 12.3976 -0.9673
Reaction properties

Ar ⇌ Ar

298.15 K, 1 bar log10K: 0.00 ΔH°r:0 J·mol-1 (Ref.: By convention)
T(°C) 0 25 60 100 150 200 250 300
log10K 0.00
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E