pH值测定法对乙酸乙酯皂化反应的研究  

Study on the Saponifaiction Reaction of Ethyl Acetate by pH Value Method

作　　者：张杰[1] ZHANG Jie(Department of Applied Chemistry, Hengshui University, Hengshui 053000, Chin)

机构地区：[1]衡水学院化工学院,河北衡水053000

出　　处：《安徽化工》2016年第6期107-111,共5页Anhui Chemical Industry

基　　金：衡水学院2016教改课题(编号:jg2016053)

摘　　要：在测定乙酸乙酯皂化反应速率常数过程中,针对电导法测定数据误差较大的缺点,提出用酸度计测定酸碱反应溶液的pH值来研究乙酸乙酯皂化反应。实验证明:用pH计测得的数据,经计算机Origin软件作一维线性拟合图,反应最接近理论值的条件为c=0.02mol/L,T=25℃。The ethyl acetate saponification reaction rate date was measuered by pH meter. Because in the classic of the conductance method for determination of constant of the process had larger data error shortcomings. Different concentration, different temperature, different instrument three aspects were explored. In order to get the optimal conditions for the determination of saponification reaction rate constant of ethyl acetate. Results showed that reaction rate constant and linear relationship were ideal. When the concentration in the 0.02mol, temperature at 25℃, through pH meter, through the computer software of origin for one-dimensional linear fitting chart.

关 键 词：酸碱反应 PH 反应速率常数 线性拟合 

分 类 号：O643[理学—物理化学] O657.92[理学—化学]