【摘要】 数据处理方法对乙酸乙酯皂化反应速率常数测定实验的结果影响较大。为了避免外推法作图、拟合公式与实验公式不匹配等处理方法带来的误差，本文根据各物理化学参数之间的关系推导得到新的函数，在Origin软件中用自定义函数对实验数据进行处理，一次拟合即可获得反应速率常数以及实验中不能直接测得的反应起始和平衡电导率值。对比分析了自定义函数拟合、多项式拟合和指数函数拟合得到的实验结果，表明自定义函数拟合能够达到最优的拟合效果，实验结果误差最小。数据处理方法的改进，即锻炼了学生综合运用物理化学、数学和计算机知识处理实验数据的能力，又培养了学生的科学思维。更多还原

【Abstract】 The data analysis method has a great influence on the experimental results of the determination of the rate constant of ethyl acetate saponification reaction. User-defined function fitting was employed to proceed the experimental data in ethyl acetate saponification experiment in Origin software. The reaction rate constant can be obtained only by one fitting. At the same time, the starting and ending conductivity of the reaction can also be obtained. By comparing the results of this method with polynomial fitting and exponential function fitting, it was found that user-defined function fitting can achieve the best fitting effect.更多还原