C(element)

Formula : C

Family: 
Element
Space group: 
Hexagonal - Dihexagonal Dipyramidal HM symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Dana class: 
1.3.6.2I - 1 Native Elements ; 1.3 Native Elements with semi-metallic and non-metallic elements ; 1.3.6 Carbon Polymorph 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
12.011 5.298 (Ref.: 95rob/hem) Robie R.A., and Hemingway B.S., 1995. Thermodynamic properties of minerals and related substances at 298.15 K and 1 Bar (105 Pascals) pressure and at higher temperatures. U.S. Geol. Survey Bull., 2131, 461 pp. 0 (Ref.: Internal calculation) 0 (Ref.: By convention) 5.740 (Ref.: 89cox/wag) Cox J.D., Wagman D.D., and Medvedev V.A., 1989. CODATA Key Values for Thermodynamics. Hemisphere Publishing Corp., New York, 279 p. 8.52 (Ref.: 89cox/wag) Cox J.D., Wagman D.D., and Medvedev V.A., 1989. CODATA Key Values for Thermodynamics. Hemisphere Publishing Corp., New York, 279 p.
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.
4.78 21.16 -2.29 (Ref.: 89cox/wag) Cox J.D., Wagman D.D., and Medvedev V.A., 1989. CODATA Key Values for Thermodynamics. Hemisphere Publishing Corp., New York, 279 p.
Reaction properties

C(element) + O2 + H2O ⇌ HCO3- + H+

298.15 K, 1 bar log10K: 64.16 ΔH°r:-391966 J·mol-1 (Ref.: By convention)
T(°C) 0 25 60 100 150 200 250 300
log10K 70.37 64.16 56.85 49.98 42.99 37.26 32.39 28.08
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-742.176248 -0.122280 62957.071823 267.906647 -2780511.489790