摘要
现行的电池电动势法测定反应Ag/AgCl与Hg/Hg2Cl2所组成的多相反应体系的热力学函数变化值的实验,存在实验结果波动大,数据不理想等问题。通过缩小温度间隔以利于更好地分析其中的原因。同时提出我们的改进方法,发现改进后测得的热力学函数变化值△rGm(298 K),△rHm(298K),△rSm(298 K)与文献值的相对误差分别为8.1%,0.03%,9.1%,并且实验重现性较好。所得实验结果的准确性也较高。经过多轮的本科学生实验证明,实验效果较好。
In the current experiment of measuring the change value of thermodynamic function by battery electromotive force method,there are some problems,such as large fluctuation of experimental results and unsatisfactory data.By reducing the temperature interval,the reasons were analyzed.At the same time,improved method was put forward.It was found that the relative errors of the values of the thermodynamic functions measured by the improved method were 8.1%,0.03%,9.1%and the experimental reproducibility was good.
作者
刘溪
程鑫
孟令涛
李淑芳
闫华
林彩萍
陈红
陈丹
钟爱国
LIU Xi;CHENG Xin;MENG Ling-tao;LI Su-fang;YAN Hua;LIN Cai-ping;CHEN Hong;CHEN Dan;ZHONG Ai-guo(College of Medicine,Chemical Industry and Materials Engineering,Taizhou University,Zhejiang Taizhou 318000,China)
出处
《当代化工》
CAS
2019年第12期2738-2741,共4页
Contemporary Chemical Industry
基金
浙江省教育厅一般项目,项目号:Y201840358
台州学院医药化工学院学生科研项目.
关键词
原电池
热力学函数
实验原因
实验改进
Galvanic cell
Thermodynamic function
Experimental reason
Experimental improvement
