复杂组成缓冲溶液pH值的讨论  

Discussion on pH of Buffer Solution with Complex Composition

作　　者：刘晓莉[1] 张颖[1] 梁萍[1] 杨芳[1] 李志强[1] Liu Xiaoli;Zhang Ying;Liang Ping;Yang Fang;Li Zhiqiang(School of Chemical Engineering,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《山东化工》2023年第4期29-31,共3页Shandong Chemical Industry

基　　金：2021年度河北工业大学课程思政示范项目;河北工业大学首批一流本科课程。

摘　　要：缓冲溶液是酸碱解离平衡的重点内容,为解决复杂组成缓冲溶液pH值计算的问题,以磷酸盐体系为例,讨论了三种组成的缓冲溶液pH值的计算方法,考察了近似计算和精确计算的区别,旨在培养学生的逻辑思维和推导能力,加深学生对基本概念和理论的理解,也是对现行教材有益的补充.Buffer solution is the key content of acid-base dissociation balance.In order to solve the problem of pH calculation of buffer solution with complex composition,taking phosphate system as an example,the calculation methods of pH of buffer solution with three compositions are discussed,and the differences between approximate calculation and accurate calculation are investigated.The purpose is to cultivate students'logical thinking and derivation ability,deepen students'understanding of basic concepts and theories,and also a beneficial supplement to the current teaching materials.

关 键 词：缓冲溶液 磷酸盐体系 PH值计算 磷酸 

分 类 号：O646.14[理学—物理化学] G642.0[理学—化学]