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Citation: Xiaowu Zhang, Pai Liu, Qishen Huang, Shufeng Pang, Zhiming Gao, Yunhong Zhang. Acid-Base Dissociation Equilibrium in Multiphase System: Effect of Gas[J]. University Chemistry, ;2024, 39(4): 387-394. doi: 10.3866/PKU.DXHX202310021 shu

Acid-Base Dissociation Equilibrium in Multiphase System: Effect of Gas

Chemistry & Chemical Engineering School, Beijing Institute of Technology, Beijing 102488, China

Corresponding author: Yunhong Zhang, yhz@bit.edu.cn
Received Date: 10 October 2023
Revised Date: 21 November 2023

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 pK_a^*. By doing so, it aims to stimulate students’ thinking and provide a new paradigm for teaching acid-base equilibrium in multiphase systems.
- Multiphase buffer theory,
- Acid-base equilibrium,
- Effective dissociation constant
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