Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Thermal Unimolecular Decomposition Reactions of Ethyl Bromide at 724.5 - 755.1$^{\circ}$K

  • Tae-Joon Park (Department of Chemistry, Korea Advanced Institute of Science) ;
  • K. H. Jung (Department of Chemistry, Korea Advanced Institute of Science)
  • Published : 1980.03.30
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Abstract

The thermal decomposition reaction of ethyl bromide was studied in the temperature range of 724.5-$755.1^{\circ}K$. Pressure dependence of the reaction was observed in its fall-off region. A theoretical evaluation of the rate constants was carried out adopting RRKM formulation in the region and was compared with the experimental observation.The validity of theory was also reevaluated by using the observed results. The observed activation energy in this study and Arrhenius A-factor were 51.7 kcal/mole and $10^{12.5}$, respectively. The small A-factror in the study was discussed in terms of the formation of a tight activated complex and the molecular elimination as a prevalent reaction mode.

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