H3P2O7-

Formula : H3P2O7-

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
176.967 51.636 (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. -2039959 (Ref.: 92gre/fug) Grenthe I., Fuger J., Konings R.J.M., Lemire R.J., Muller A.B., Nguyen Trung C., and Wanner H., 1992. Chemical Thermodynamics, Volume 1: Chemical Thermodynamics of Uranium. North Holland, Amsterdam, 1, 714 pp. -2292846 (Ref.: Internal calculation) 213.384 (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. 159.99 (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
38.1966 60.7190 0.1665 -14.1369 150.5340 19.1786 3.5849
Reaction properties

2H2PO4- + H+ ⇌ H3P2O7- + H2O

298.15 K, 1 bar log10K: 0.49 ΔH°r:26523 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K 0.13 0.49 1.06 1.73 2.58 3.43 4.33 5.35
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
809.538469 0.129902 -47077.963573 -291.965309 2895356.472899