CaCO3

Formula : CaCO3

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
100.087 -15.657 (Ref.: 97sve/sho) Sverjensky, D.A., Shock, E.L., and Helgeson, H.C., 1997 Prediction of the thermodynamic properties of aqueous metal complexes to 1000 C and 5 kb: Geochim. Cosmo. Acta, v. 61, No. 7, pp. 1359-1412. -1099084 (Ref.: 82plu/bus) Plummer, L.N. and Busenberg, E., 1982. The Solubilities of Calcite, Aragonite, and Vaterite in CO2-H2O Solutions Between 0 and 90 C and an Evaluation of the Aqueous Model of the System CaCO3-CO2-H2O. Geochimica et Cosmochimica Acta, Vol. 46, p. 1011-1040. -1203400 (Ref.: 82plu/bus) Plummer, L.N. and Busenberg, E., 1982. The Solubilities of Calcite, Aragonite, and Vaterite in CO2-H2O Solutions Between 0 and 90 C and an Evaluation of the Aqueous Model of the System CaCO3-CO2-H2O. Geochimica et Cosmochimica Acta, Vol. 46, p. 1011-1040. 5.182 (Ref.: Internal calculation) -125.31 (Ref.: 97sve/sho) Sverjensky, D.A., Shock, E.L., and Helgeson, H.C., 1997 Prediction of the thermodynamic properties of aqueous metal complexes to 1000 C and 5 kb: Geochim. Cosmo. Acta, v. 61, No. 7, pp. 1359-1412.
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
-1.6347 -36.5368 38.3895 -10.1165 -48.2453 -37.9242 -0.1590
Reaction properties

HCO3- + Ca+2 ⇌ CaCO3 + H+

298.15 K, 1 bar log10K: -7.11 ΔH°r:29530 J·mol-1 (Ref.: 82plu/bus) Plummer, L.N. and Busenberg, E., 1982. The Solubilities of Calcite, Aragonite, and Vaterite in CO2-H2O Solutions Between 0 and 90 C and an Evaluation of the Aqueous Model of the System CaCO3-CO2-H2O. Geochimica et Cosmochimica Acta, Vol. 46, p. 1011-1040.
T(°C) 0 25 60 100 150 200 250 300
log10K -7.60 -7.11 -6.58 -6.12 -5.65 -5.22 -4.75 -4.12
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
695.429395 0.116329 -36152.347632 -256.843027 1740259.153733