K2SO4.FeSO4:6H2O

Formula : K2Fe(SO4)2:6H2O

Family: 
Sulfates

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
434.262 -3592714 (Ref.: 04chr) Christov C., 2004. 'Pitzer ion-interaction parameters for Fe(II) and Fe(III) in the quinary {Na + K + Mg + Cl + SO4 + H2O} system at T = 298.15 K.' J. Chem. Thermod. 36: 223-235. -4280746 (Ref.: Internal calculation) 133.260 (Ref.: 78hel/del) Helgeson, H.C., Delany, J.M, Nesbitt, H.W., and Bird, D.K., 1978. Summary and Critique of the Thermodynamic Properties of Rock Forming Minerals: Amer. J. Sci., 278A, 229 pp.
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
Reaction properties

K2SO4.FeSO4:6H2O ⇌ Fe+2 + 2K+ + 2SO4-2 + 6H2O

298.15 K, 1 bar log10K: -4.60 ΔH°r:152806 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -7.09 -4.60 -1.79 0.80 3.34 5.20 6.36 6.58
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-3443.037276 -0.515822 181721.598653 1254.894885 -10882961.299826