Arrhenius经验公式的推导及Ea的本质

Derivation of the Arrhenius Equation and the Nature of Ea

作者从热力学理论推导出Arrhenius公式,揭示了Ea即为-Gom,B(生成物的吉布斯自由能)或Gom,B(反应物的吉布斯自由能).

Ea is referred to as the activation energy in Arrhenius empirical equation by Arrhenius,meaning the difference between the average energy of activated molecular and that of non-activated molecular in elementary reaction.However,the elementary reaction does not have the intermediate state （activated molecule）,and the reactions possessing the intermediate state （activated molecule） can not be referred to as the elementary reaction.The nature of Ea is not clearly expressed in the Arrhenius empirical equation,the activation energy （Ea） and rate constant （k） not theoretically calculated.Therefore,it is very significant to derive the Arrhenius empirical equation and seek the nature of Ea.This paper endeavors to derive the Arrhenius empirical equations grounded upon the thermodynamic theory,and ultimately confirms that the Ea is the Gibbs free energy of resultant （-Gm,B^o） or Gibbs free energy of reactant （-Gm,B^o）.