全面认识酸碱缓冲溶液的缓冲能力——由高校通用教材中一道例题引发的思考  

Comprehensive Understanding of Buffer Function of Buffer Solution:Inspired by an Example in a Textbook

作　　者：岳宣峰[1] 段亚娟 孙君岳 简亚军 张延妮[2] Xuanfeng Yue;Yajuan Duan;Junyue Sun;Yajun Jian;Yanni Zhang(Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province,School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an 710062,China;Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,Shaanxi Normal University,Xi’an 710062,China)

机构地区：[1]陕西师范大学化学化工学院,陕西省生命分析化学重点实验室,西安710062 [2]陕西师范大学药用资源与天然药物化学教育部重点实验室,西安710062

出　　处：《大学化学》2021年第9期189-195,共7页University Chemistry

基　　金：陕西师范大学研究生教育教学改革研究项目(GERP-19-60,GERP-20-18)。

摘　　要：区分了有关缓冲溶液的两个指标,分别用来衡量瞬态缓冲能力和持续缓冲能力,提议分别命名为缓冲强度β和缓冲容量α(对应的计算公式分别是微分式和积分式),对教材中采用微分式进行有关持续缓冲能力计算的可行性进行了深入探讨,指出了其适用条件,并由此就教材相关内容提出改进建议。Two indices addressing buffer solution are differentiated,which are used to gauge punctual and durative buffer function,respectively.Buffer strengthβand buffer capacityαare accordingly suggested for the names of the indices(their corresponding mathematic expressions are differential formula and integral formula,respectively).The feasibility of introducing differential formula into calculation of durative capacity in the textbooks is intensively discussed,and the applicable conditions of this practice are pointed out,which forms the basis of suggestions for improvement on some contents of the textbooks.

关 键 词：缓冲能力 缓冲指数 缓冲容量 PH 

分 类 号：G64[文化科学—高等教育学] O651[文化科学—教育学]