电极电势的三种可视化方法辨析  

Analysis of Three Visualization Methods for Electrode Potential

作　　者：王学琳 韩威 杨瑶 黄婵 田璐瑜 邹光龙[2] WANG Xuelin;HAN Wei;YANG Yao;HUANG Chan;TIAN Luyu;ZOU Guanglong(College of Data Science and Information Engineering,Guizhou Minzu University,Guizhou Guiyang 550025;College of Chemical Engineering,Guizhou Minzu University,Guizhou Guiyang 550025,China)

机构地区：[1]贵州民族大学数据科学与信息工程学院,贵州贵阳550025 [2]贵州民族大学化学工程学院,贵州贵阳550025

出　　处：《广州化工》2024年第19期11-13,47,共4页GuangZhou Chemical Industry

基　　金：国家自然科学基金项目(21363004);贵州民族大学2021年度自然科学项目(GZMUZK[2021]YB04)。

摘　　要：电极电势作为衡量物质氧化还原能力强弱的依据,其数值的大小则反映了电对(氧化型/还原型)中得失电子的能力,它表征的是元素氧化数的相对稳定性以及是否发生歧化反应等。然而,传统的列表式电极电势无法全面了解某一种元素的相关氧化态,而用图解法讨论与某元素相关的电极电势不仅能克服上述的不便,而且会提供元素及其化合物的更多信息。从电极电势的三种主要可视化方法(元素电势图、电势-pH图和自由能(电势)-氧化数图)出发,系统全面地了解电势与浓度、温度和溶液酸度之间的关联情况,并举例介绍了它们的一些应用。The electrode potential is the basis for measuring the redox ability of substances,and its value reflects the relative size of the ability to gain and lose electrons in the electric pair(oxidation type/reduction type),which reflects the stability of a certain oxidation number of elements,whether disproportionation occurs,etc.However,the traditional tabular electrode potential cannot fully understand the relevant oxidation state of an element,and the graphical discussion of the electrode potential related to an element can not only overcome the above inconvenience,but also provide more information about the element and its compounds.Starting from the three main visualization methods of electrode potential(Latimer diagram,potential-pH diagram and free energy(potential)-oxidation number diagram),the relationship between potential and concentration,temperature and solution acidity was systematically and comprehensively understood,and some applications of them was introduced with examples.

关 键 词：电极电势 可视化 元素电势图 电势-PH图 电势-氧化数图 

分 类 号：O646[理学—物理化学]