NaHCO3

Formula : NaHCO3

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
84.007 -847388 (Ref.: 90nor/plu) Nordstrom D.K., Plummer L.N., Langmuir D., Busenberg E., May H.M., Jones B.F., and Parkhurst D.L., 1990. Revised chemical equilibrium data for major water-mineral reactions and their limitations, in Bassett, R.L. and Melchior, D. eds., Chemical modeling in aqueous systems II: Washington D.C., American Chemical Society Symposium Series 416, p. 398-413. -918291 (Ref.: Internal calculation) 192.300 (Ref.: 13ste/ben) Stefansson, A., Benezeth, P., Schott, J., 2013. Carbonic acid ionization and the stability of sodium bicarbonate and carbonate ion pairs to 200 C - A potentiometric and spectrophotometric study. Geochimica et Cosmochimica Acta 120, 600-611.
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
Reaction properties

HCO3- + Na+ ⇌ NaHCO3

298.15 K, 1 bar log10K: -0.25 ΔH°r:11979 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -0.44 -0.25 -0.04 0.11 0.22 0.30 0.43 0.67
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
785.885945 0.114620 -43192.569531 -283.803348 2383649.436446