Gas-Phase NMR Study of the DCl-HBr Isotope Exchange Reaction

• Joseph W. Nibler ^[1] ; Philip Minarik ^[1] ; William Fitts ^[1] ; Rodger Kohnert ^[1]
  1. [1] Oregon State University

     Oregon State University

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 73, Nº 1 (January), 1996, págs. 99-102
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A physical chemistry laboratory experiment is described in which proton and deuteron FT-NMR spectra are used to determine the equilibrium constant for the isotope exchange reaction DCl + HBr <==> DBr + HCl . The measurement illustrates an unusual gas phase application of NMR spectroscopy. The results are in good accord with a 297K value of Kp = 0.818, calculated from statistical thermodynamics using vibrational-rotational constants. The latter can be taken from the literature or can be conveniently determined in a high resolution FTIR experiment commonly done in most physical chemistry laboratories.