Fe(element)

Formula : Fe

Family: 
Element
Space group: 
Isometric - Hexoctahedral HM symbol (4/m -3 2/m) Space Group: I m3m
Dana class: 
1.1.11.0I - 1 Native Elements ; 1.1 Native Elements with metallic elements other than the platinum group ; 1.1.11 Iron-Nickel group

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
55.847 7.040 (Ref.: 04fab/sax) Fabrichnaya O., Saxena S.K., Richet P. and Westrum E.F. (Eds), 2004. Thermodynamic data, models, and phase diagrams in multicomponent oxide systems. ISBN 3-540-14018-2 Springer Verlag Berlin Heidelberg New York, 198 p. 0 (Ref.: Internal calculation) 0 (Ref.: By convention) 27.320 (Ref.: 95par/kho) Parker, V.B., Khodakovsky, I.L. (1995) Thermodynamic properties of aqueous ions (2+ et 3+) of iron and the key compouds of iron. J. Phys. Chem. Ref. Data 24 (5) p. 1699-1745. 25.10 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 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.
17.71 23.77 0.27 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.
Reaction properties

Fe(element) + 0.5O2 + 2H+ ⇌ Fe+2 + H2O

298.15 K, 1 bar log10K: 58.86 ΔH°r:-369763 J·mol-1 (Ref.: By convention)
T(°C) 0 25 60 100 150 200 250 300
log10K 64.76 58.86 52.02 45.74 39.50 34.51 30.38 26.85
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-422.483246 -0.065962 42457.851983 151.303565 -1403612.680903