KOH

Formula : KOH

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
56.106 14.128 (Ref.: 97apok/hel) Pokrovskii V.A., and Helgeson H.C., 1997a. Thermodynamic properties of aqueous species and the solubilities of minerals at high pressures and temperatures: the system Al2O3 H2O KOH. Chemical Geology, 137, p. 221 242. -437112 (Ref.: 76bae/mes) Baes Jr. C.F., and Mesmer R.E., 1976. The Hydrolysis of Cations. Wiley Interscience, 489 pp. -471531 (Ref.: Internal calculation) 117.152 (Ref.: 97apok/hel) Pokrovskii V.A., and Helgeson H.C., 1997a. Thermodynamic properties of aqueous species and the solubilities of minerals at high pressures and temperatures: the system Al2O3 H2O KOH. Chemical Geology, 137, p. 221 242. 3.50 (Ref.: 97apok/hel) Pokrovskii V.A., and Helgeson H.C., 1997a. Thermodynamic properties of aqueous species and the solubilities of minerals at high pressures and temperatures: the system Al2O3 H2O KOH. Chemical Geology, 137, p. 221 242.
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
15.4005 5.0451 22.0752 -11.8357 -2.0418 2.7280 -0.2092
Reaction properties

K+ + H2O ⇌ KOH + H+

298.15 K, 1 bar log10K: -14.46 ΔH°r:66438 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -15.54 -14.46 -13.26 -12.23 -11.27 -10.57 -10.04 -9.62
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
142.390651 0.016361 -11313.422245 -51.781943 386389.623406