The thermal decomposition reaction of ethyl bromide was studied in the temperature range of 724.5-755.1 K. Pressure dependence of the reaction was observed in its fall-off region. A theoretical evaluation of the rate constants was calculated adopting RRKM formulation in the region and was compared with the experimental observations. 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-factor in the study was discussed in terms of the formation of a tight activated compex and the molecular elimination as a prevalent reaction mode.
온도 범위 724.5 - 755.1 K 에서 에틸 브로마이드의 열분해 반응을 연구 하였다. Fall-off 영역에서 반응의 압력의존도를 관찰하였다. 반응속도상수의 이론적인 계산은 RRKM 이론을 사용하여 수행하였으며 그 결과를 실험치와 비교 하였다. 또한 실험결과에 의해 이론의 타당성을 재평가 하였다.
측정된 활성화 에너지와 Arrhenius A 인자의 값은 각각 51.7kcal/mol과 $10^{12.5}$ 였다. 이로부터 주된 반응양식이 분자 이탈반응 이며 견고한 활성화물이 생성됨을 알았다.
