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Citation: Lianghong Ye, Junqing Ni, Zhongyi Yan, Zhanming Zhang, Can Zhu, Mo Sun. Chemical Fuel-Driven Non-Equilibrium Color Change[J]. University Chemistry, ;2025, 40(3): 349-354. doi: 10.12461/PKU.DXHX202406109 shu

Chemical Fuel-Driven Non-Equilibrium Color Change

Department of Chemistry, Fudan University, Shanghai 200438, China

Corresponding author: Mo Sun, mosun@fudan.edu.cn
Received Date: 27 June 2024
Revised Date: 19 September 2024

We have introduced a general chemistry experiment with the title of "Chemical Fuel-Driven Non-Equilibrium Color Change". This experiment mainly includes the pH jump-induced color change reaction of methyl red based on tribromoacetic acid, and the exploration of its mechanism using a pH meter. Through the practice of this experiment, students can understand the concepts of thermodynamic equilibrium, kinetically controlled non-equilibrium, and dissipative non-equilibrium states, master the basic concepts of buffer solutions and pH indicators, as well as consolidate the usage of common experimental instruments.
- Non-equilibrium chemisty,
- pH jump,
- Color change of methyl red,
- General chemical experiment
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