Carbon: enthalpies and thermodynamic properties

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Enthalpies

Thermodynamic data

Table: thermodynamic data for carbon.
State ΔfH° ΔfG° S° CpH H°298.15-H°0
Units kJ mol-1 kJ mol-1 J K-1 mol-1 J K-1 mol-1 kJ mol-1
Solid (graphite) *0 0 *5.74 ± 0.10 8.53 *1.050 ± 0.020
Solid (diamond) 1.897 2.900 2.38 6.115 0.52
Gas *716.68 ± 0.45 671.29 *158.100 ± 0.003 20.838 *6.536 ± 0.001
Gas (C2) 831.9 775.9 199.4 43.2

Notes

This tables gives a few thermodynamic data. Most values are those given in the NBS technical notes (reference 1) after conversion from the units used within those notes. Values labelled with an asterisk (*) are Committee on Data for Science and Technology (CODATA) agreed values for the thermodynamic properties of key chemical substances (reference 2). These values are published in a number of places including the WWW (reference 3).

References

  1. R.H. Schumm, D.D. Wagman, S. Bailey, W.H. Evans, and V.B. Parker in National Bureau of Standards (USA) Technical Notes 270-1 to 270-8, 1973.
  2. J.D. Cox, DD., Wagman, and V.A. Medvedev, CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, USA, 1989.
  3. http://www.codata.org/resources/databases/key1.html

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