Fe7.016S8

Formula : Fe7.016S8

Family: 
Sulfides

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
648.351 135.073 (Ref.: 08bla) Blanc P. (2008) : Thermoddem - Selection de proprietes thermodynamiques pour les principales especes aqueuses et minerales porteuses de fer. Rapport final. Rapport BRGM/RP-56587-FR, 70p. -766773 (Ref.: Internal calculation) -755380 (Ref.: 05wal/pel) Waldner, P., Pelton, A.D. (2005) Thermodynamic modeling of the Fe-S system. Journal of Phase Equilibria and Diffusion 26, 23-38. 486.320 (Ref.: 05wal/pel) Waldner, P., Pelton, A.D. (2005) Thermodynamic modeling of the Fe-S system. Journal of Phase Equilibria and Diffusion 26, 23-38. 398.96 (Ref.: 05wal/pel) Waldner, P., Pelton, A.D. (2005) Thermodynamic modeling of the Fe-S system. Journal of Phase Equilibria and Diffusion 26, 23-38.
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.
140.60 720.72 38.65 (Ref.: 05wal/pel) Waldner, P., Pelton, A.D. (2005) Thermodynamic modeling of the Fe-S system. Journal of Phase Equilibria and Diffusion 26, 23-38.
Reaction properties

Fe7.016S8 + 6.032H+ + 0.738H2O ⇌ 7.016Fe+2 + 7.508HS- + 0.246S2O3-2

298.15 K, 1 bar log10K: -47.31 ΔH°r:52039 J·mol-1 (Ref.: 05wal/pel) Waldner, P., Pelton, A.D. (2005) Thermodynamic modeling of the Fe-S system. Journal of Phase Equilibria and Diffusion 26, 23-38.
T(°C) 0 25 60 100 150 200 250 300
log10K -48.46 -47.31 -46.74 -47.02 -48.39 -50.80 -54.40 -59.78
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-7434.681241 -1.200021 399791.083026 2696.514294 -23831792.004889