Si4O6(OH)6-2

Formula : Si4O6(OH)6-2

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
310.382 -4201704 (Ref.: 07las) brgm report in progress -4668426 (Ref.: Internal calculation) 263.480 (Ref.: 17bbla) Blanc P. (2017) - Thermoddem : Update for the 2017 version. Report BRGM/RP-66811-FR, 20 p.
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

4H4SiO4 ⇌ Si4O6(OH)6-2 + 4H2O + 2H+

298.15 K, 1 bar log10K: -15.20 ΔH°r:23697 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -15.48 -15.20 -14.75 -14.44 -14.37 -14.55 -14.88 -15.26
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
1563.817835 0.171615 -101392.572641 -551.270122 6575749.632837