摘要
通过测定反应温度和碘化钾浓度对反应速率的影响计算活化能,根据公式推导结果消除了试剂浓度对实验结果的影响。用Origin软件对实验数据进行拟合,从图形中得到反应速率、反应浓度、反应温度和活化能的直观对应关系。改进后的实验由单纯的验证性实验变成了自主设计综合性实验。
This article calculated the activation energy of chemical reaction by measuring the effects of reaction temperature and concentration of potassium iodide on reaction rate,and eliminated the influences of the reagents by means of formula derivation.Experimental data were fitted by Origin,therefore relationship among reaction rate,concentration,temperature and activation energy could be founded directly from the fitting curve.Different from the merely verification experiment,the revised experiment changed into independently designed comprehensive experiment.
出处
《化学教育》
CAS
北大核心
2015年第14期31-33,共3页
Chinese Journal of Chemical Education
基金
大连理工大学教育教学改革基金项目“结合网络实验教学资源,进行‘普通化学实验’教学改革的探索”(ZX2014004)
多样化的考核方法探索与评价机制改革——面向普通化学(MS201368)
关键词
活化能
实验教学
碘量法
图解法
ORIGIN
activation energy
experiment teaching
iodometric method
graphic treatment
Origin
