乙酸乙酯皂化反应速率常数测定实验的改进

摘要

改进了电导法测定乙酸乙酯皂化反应速率常数实验的反应器和反应物混合方式。采用了一种改进的双层恒温烧杯作为反应器，可以准确地控制反应温度。用单通道移液器量取分析纯乙酸乙酯加入反应器，使用磁力搅拌器快速混合反应物。改进后的实验能够方便地测量κ0和κt，学生通过实验可以得到较为准确的速率常数和较好的数据拟合相关系数。%The study aims to improve the mixing mode and reactor of the experiment for determining rate constant of acetic ether saponification using electric conductant method. By using a double layer thermostatic beaker as the reactor, the reaction temperature can be efficient controlled. The analytically pure acetic ether has been poured into reactor by micro pipettes, after that the reactants have been quickly mixed with a magnetic stirrer. The κ0 and κt are measured easily with this improvement in experiment. It enables students to obtain comparatively accurate rate constant and better correlation coefficients.