氧化还原反应中2个重要关系式用于求算非氧化还原反应平衡常数的方法讨论  

Application of Two Important Relation Equations About Redox Reactions in Calculating Equilibrium Constants of Non-Redox Reactions

作　　者：张文广 高兆芬 计从斌 黄建国 ZHANG Wen-Guang;GAO Zhao-Fen;JI Cong-Bin;HUANG Jian-Guo(College of Chemistry and Environmental Sciences,Shangrao Normal University,Shangrao 334001,China)

机构地区：[1]上饶师范学院化学与环境科学学院,江西上饶334001

出　　处：《化学教育（中英文）》2020年第24期110-113,共4页Chinese Journal of Chemical Education

摘　　要：电化学中的K^Ɵ-E^Ɵ关系式和φ-φ^Ɵ关系式是分别求算原电池氧化还原反应平衡常数和氧化还原电对电极电势的重要公式。实际上,这2个公式也可以用来求解非氧化还原反应的平衡常数。以实例的形式讨论了这一思想的根据、方法,及其在求算水电离常数、弱酸或弱碱电离常数、难溶性电解质溶度积常数和配离子形成常数等方面的应用。Relation equations of electrochemistry,K^Ɵ-E^Ɵ and φ-φ^Ɵ, are two very important formulas about calculating equilibrium constants and electrode potential of redox reactions in voltaic cells. In fact, they can be used in calculating the equilibrium constant of non-redox reactions. This paper discusses the basis and method of the idea, and the applications in calculating ionization constant of water and weak acids and weak bases, and solubility product constant of some slightly salts and formation constant of some complex ions by the form of actual examples.

关 键 词：原电池 氧化还原反应 非氧化还原反应 平衡常数 化学计算 

分 类 号：G642[文化科学—高等教育学] O642.43-4[文化科学—教育学]