【摘要】 根据热动力学的基础理论,应用一级反应的无量纲参数法,在20和30℃下测定了乙酸乙酯、丙酸乙酯和丁酸乙酯在乙醇-水混合溶剂中皂化反应速度常数,并计算了它们的活化能,结果在误差范围内与文献值相符合。还计算了这三个反应体系的活化自由能。本文讨论了反应物初始浓度和反应的速度常数与量热计冷却常数的关系。更多还原

【Abstract】 On the theoritical basis of thermokinetics proposed in previous articles, the thermokinetics for saponification of the ethyl esters of acetic, propionic, and normal butyric acids have been studied at 20 and 30℃ in 85% ethyl alcohol aqueous solution with the method of dimensionless parameter for the first order reactions. The rate canstants and the activation energies of these reactions are in reasonable agreement with the values in literature. The activation free-energies of the reaction have been calculated. The studied region for initial concentration of reactant and rate constant of reaction limited by cooling constant of calorimeter has also been discussed in this paper.更多还原