โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Thorium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้‡ท
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Thorium
  • ๐Ÿ‡ซ๐Ÿ‡ท Thorium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Thorium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืชื•ืจื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Torio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใƒˆใƒชใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Tório
  • ๐Ÿ‡ท๐Ÿ‡บ ะขะพั€ะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Torio
  • ๐Ÿ‡ธ๐Ÿ‡ช Torium

Thorium: 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 thorium. 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
Solid *0 0 *51.8 ± 0.5 27.3
Gas *602 ± 6 561 *190.17 ± 0.05 20.8

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.