物理化学实验项目改进创新——以“原电池电动势的测定及在热力学上的应用”为例  

Improvement of Physical Chemistry Experiment:Measurement of Galvanic Battery Electromotive Force and Application in Thermodynamics

作　　者：胡俊平[1] 刘妍[1] 毕慧敏[1] 游富英[1] 谢鹏涛[1] 

机构地区：[1]邯郸学院化学化工与材料学院

出　　处：《化学教育》2016年第10期32-34,共3页Chinese Journal of Chemical Education

摘　　要：通过分析电化学法测量化学反应热力学函数变化值实验中测定结果与预期结果偏差大、实验数据重现性差的原因,结合教学实践,采用循环水恒温电动势测定装置,测量锌-铜电池在不同温度下的电动势,进而推导反应热力学函数变化值,以提高教学的实效性,促进学生设计能力和创新能力的发展。This paper analyzed the reasons for the large difference between experimental data and expected data, and the reasons for the poor reproducibility of experimental data of measure- ment experiment of thermodynamics function variation in chemical reaction by electrochemistry method. Based on teaching practice, the authors measured the electromotive force of zinc-copper battery at different temperature through measuring device with thermostatic control system of circulating water, and calculated the variation of thermodynamics functions in the chemical reac- tion. The improved experiment could improve the effectiveness of experiment teaching and pro- mote the development of students＇ design ability and innovative ability.

关 键 词：电动势 锌-铜电池 热力学函数 

分 类 号：G642[文化科学—高等教育学] O64-4[文化科学—教育学]