影响φCu^(2+)/Cu电极电势测定的因素探讨  

Impact Factors Explore of φCu^(2+)/Cu Electrode Potential Determined

作　　者：何武强[1] 

机构地区：[1]中南民族大学工商学院环境与生命科学系,湖北武汉430074

出　　处：《化工技术与开发》2010年第12期49-52,共4页Technology & Development of Chemical Industry

摘　　要：电极电势是物理化学重要的基础性数据。在以往的实验中,我们发现铜的浓差电池电动势的测定值和理论值相差较大,为此,我们设计了一系列的实验来探讨影响铜的浓差电池电动势的因素,包括溶液浓度、电镀时间、电流密度等因素,以期为以后的物理化学实验提供有价值的参考数据。实验结果表明,25℃,采用20mA·cm-2的电流密度电镀铜电极2min的条件下,得到的φCu2+/Cu与文献值最为接近。而铜的浓差电池电动势在溶液浓度较小时实验值与理论值较为接近。Electrode potential was an important basis data in physical and chemical.In the past experiments,it was found that copper concentration cell electromotive force of the measured value had larger difference between the theoretical value.To this end,we designed a series of experiments to explore the effects of copper concentration cell electromotive force of factors,including solution concentration,plating time,current density and other factors.The experimental results showed that 25℃,using the current density plating 20mA/cm2 copper electrode under the conditions of 2 min,φCu2＋/Cu was the most closed to the literature value.And copper concentration cell electromotive force in the solution was closer to the theoretical value when the solution concentration was smaller.

关 键 词：对消法 电极电势 φCu2+/Cu 

分 类 号：O646.23[理学—物理化学]