Jump to content

Statistical Thermodynamics and Rate Theories/Data

From Wikibooks, open books for an open world
Molecule (K) (K)
H2[1] 87.547 6332.52
N2[2] 2.0518 3393.54
O2[3] 2.0793 2273.60
F2[4] 1.2808 1318.87
HF[5] 41.345 5954.27
HCl[5] 15.240 4303.41
NO[6] 2.4524 2739.79
C2H2[7] 1.7012

Example

[edit | edit source]

Calculate the ground state characteristic rotational () and characteristic vibrational () temperatures for molecular hydrogen, H2.

Where is the reduced Planck constant, is the internuclear distance for ground state hydrogen[1], is the Boltzmann constant, and is the reduced mass.

The characteristic vibrational temperature () is calculated using the following equation

Where is Planck's constant, is the Boltzmann constant, and is the vibrational frequency of the molecule. To retain units of K the vibrational frequency must be changed to units of s-1.

References

[edit | edit source]
  1. a b http://webbook.nist.gov/cgi/cbook.cgi?ID=1333-74-0
  2. http://webbook.nist.gov/cgi/cbook.cgi?ID=C7727379&Mask=1000#ref-1 Invalid parameter in <ref> tag
  3. http://webbook.nist.gov/cgi/cbook.cgi?ID=C7782447&Mask=1000#Diatomic Invalid parameter in <ref> tag
  4. http://webbook.nist.gov/cgi/cbook.cgi?Name=fluorine&Units=SI&cDI=on#Diatomic Invalid parameter in <ref> tag
  5. a b http://webbook.nist.gov/cgi/cbook.cgi?ID=C7664393&Mask=1000#Diatomic Invalid parameter in <ref> tag
  6. http://webbook.nist.gov/cgi/inchi?ID=C10102439&Mask=1000#Diatomic Invalid parameter in <ref> tag
  7. E. Plyler, E. Tidwell, and T. Wiggins, (1963). Rotation-Vibration Constants of Acetylene. Journal of Optical Society America. Table 4, Data section in appendix