大学化学 >> 2016, Vol. 31 >> Issue (3): 55-63.doi: 10.3866/PKU.DXHX20160355

化学实验 上一篇    下一篇

实时电导率法测定乙酸乙酯皂化反应速率常数

张毅1,张喆1,柳明洙1,李锦1,秦燃1,王一杉1,郑炯1,郑申2,赖建豪2,陈然2,高尔雅2,李丹彤2,朱肖淇2,李击3,鄢尤奇3,冯雪芝3,赵明3,*(),胡新3,*()   

  1. 1 北京中科泛华测控技术有限公司, 北京 100083
    2 北京大学基础医学院2011级, 北京 100191
    3 北京大学药学院, 北京 100191
  • 发布日期:2016-04-06
  • 通讯作者: 赵明,胡新 E-mail:sunmoonzhao@bjmu.edu.cn;huxinbjmu@bjmu.edu.cn
  • 基金资助:
    北京大学药学院教学改革项目

Determination of the Second-Order Rate Constant for the Saponification of Ethyl Acetate by Real-Time Conductivity Measurements

Yi ZHANG1,Zhe ZHANG1,Ming-Zhu LIU1,Jin LI1,Ran QIN1,Yi-Shan WANG1,Jiong ZHENG1,Shen ZHENG2,Jian-Hao LAI2,Ran CHEN2,Er-Ya GAO2,Dan-Tong LI2,Xiao-Qi ZHU2,Ji LI3,You-Qi YAN3,Xue-Zhi FENG3,Ming ZHAO3,*(),Xin HU3,*()   

  1. 1 Beijing Zhong Ke Fan Hua Measurement & Control Technology Co., Ltd, Beijing 100083, P. R. China
    2 School of Basic Medicine, Peking University, Beijing 100191, P. R. China
    3 School of Pharmaceutical Sciences, Peking University, Beijing 100191, P. R. China
  • Published:2016-04-06
  • Contact: Ming ZHAO,Xin HU E-mail:sunmoonzhao@bjmu.edu.cn;huxinbjmu@bjmu.edu.cn
  • Supported by:
    北京大学药学院教学改革项目

摘要:

采用由电导率传感器、数据采集卡和个人计算机构成的模块化设计,以及基于LabVIEW 2013的虚拟仪器编程技术,建立了一套多通道的、并行的、实时的和自动化的电导率数据采集实验系统,使用该系统对经典的电导率法测定乙酸乙酯皂化二级反应速率常数实验进行了改革,提高了这一实验的教学效率。此项改革可以为今后其他经典化学实验改革提供参考。

关键词: 化学反应速率常数, 电导率, 实时测定, 并行测试, 多通道测试

Abstract:

Determination of the second-order rate constant for the saponification of ethyl acetate has been a classical experiment in the physicochemical laboratory course for more than thirty years. In this paper, a new measurement system composed of the conductivity sensor and the computer equipped with the Nextkit Nano data acquisition card programmed with LabVIEW 2013, has been designed and constructed for multi-channel, parallel, real-time, and automatic acquisition of conductivity data. This setup has improved the teaching efficiency, and sets up an example for the future reforms of other classical experiments in chemical laboratory courses.

Key words: Rate constant of chemical reactions, Conductivity, Real-time measurement, Parallel measurement, Multi-tunnel measurement

MSC2000: 

  • O6-3