多相体系的酸碱解离平衡:气相的影响
Acid-Base Dissociation Equilibrium in Multiphase System:Effect of Gas
张晓武 1刘湃 1黄启燊 1庞树峰 1高志明 1张韫宏1
作者信息
- 1. 北京理工大学化学与化工学院,北京 102488
- 折叠
摘要
酸碱平衡是化学教学中十分重要的内容,而在目前的教学中仅仅描述了均相溶液中的酸碱解离与pH缓冲问题,并未描述多相体系中气相成分对体系酸碱解离与pH缓冲的影响.针对该问题,本文以典型的气溶胶多相体系为例,通过对多相缓冲理论和有效解离常数p Ka*的分析,讨论了多相体系中组分挥发性和吸湿性对体系酸碱平衡的影响,进而开拓学生思维,并为多相体系酸碱平衡的教学提供新范例.
Abstract
Acid-base equilibrium is a crucial topic in chemical education.However,current teaching practices only focus on describing acid-base dissociation and pH buffering in homogeneous solutions,without considering the influence of gas-phase components on acid-base dissociation and pH buffering in multiphase systems.To address this issue,this paper takes a typical aerosol multiphase system as an example and examines the impact of component volatility and hygroscopicity on the acid-base equilibrium in multiphase systems through the analysis of multiphase buffering theory and the effective dissociation constant p Ka*.By doing so,it aims to stimulate students'thinking and provide a new paradigm for teaching acid-base equilibrium in multiphase systems.
关键词
多相缓冲理论/酸碱平衡/有效解离常数Key words
Multiphase buffer theory/Acid-base equilibrium/Effective dissociation constant引用本文复制引用
基金项目
研究生案例教学建设项目(2023)(3100012052304)
北京市高等教学学会项目(1330012052301)
出版年
2024
国家科技期刊平台
NSTL
万方数据