โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Oxygen
  • ๐Ÿ‡จ๐Ÿ‡ณ ๆฐง
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Zuurstof
  • ๐Ÿ‡ซ๐Ÿ‡ท Oxygène
  • ๐Ÿ‡ฉ๐Ÿ‡ช Sauerstoff
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ื—ืžืฆืŸ
  • ๐Ÿ‡ฎ๐Ÿ‡น Ossigeno
  • ๐Ÿ‡ฏ๐Ÿ‡ต ้…ธ็ด 
  • ๐Ÿ‡ต๐Ÿ‡น Oxigênio
  • ๐Ÿ‡ท๐Ÿ‡บ ะšะธัะปะพั€ะพะด
  • ๐Ÿ‡ช๐Ÿ‡ธ Oxi´geno
  • ๐Ÿ‡ธ๐Ÿ‡ช Syre

Oxygen: thermochemistry and thermodynamics

Temperatures

Image showing periodicity of melting point for the chemical elements as colour-coded squares on a periodic table grid.
Image showing periodicity of melting point for the chemical elements as colour-coded squares on a periodic table grid.

Enthalpies

Thermodynamic data

This table gives a few thermodynamic data for oxygen. 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).

State Δf Δf CpH 298.15‑H°0
Units kJ mol‑1 kJ mol‑1 J K‑1 mol‑1 J K‑1 mol‑1 kJ mol‑1
Gas (O2) *0 0 *205.152 ± 0.005 29.4 *8.680 ± 0.002
Gas (atoms) *249.18 ± 0.10 231.75 *161.059 ± 0.003 21.9 *6.725 ± 0.001
Gas (O3) 143 163 238.8 39.2 10.350

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. http://www.codata.info/resources/databases/key1.html
  3. J.D. Cox, DD., Wagman, and V.A. Medvedev, CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, USA, 1989.