大学化学 >> 2025, Vol. 40 >> Issue (3): 349-354.doi: 10.12461/PKU.DXHX202406109

化学实验 上一篇    下一篇

化学能驱动的非平衡态变色

叶亮宏, 倪隽清, 严仲毅, 张展鸣, 朱灿, 孙默   

  1. 复旦大学化学系, 上海 200438
  • 收稿日期:2024-06-27 录用日期:2024-09-19 发布日期:2025-03-19
  • 通讯作者: 孙默 E-mail:mosun@fudan.edu.cn
  • 基金资助:
    复旦大学本科教学改革项目(FA2024A149)；复旦大学课程思政教育教学改革研究课题(KT23034)；复旦大学本科生学术研究资助计划曦源项目；复旦大学希德书院“启明星科创计划”

Chemical Fuel-Driven Non-Equilibrium Color Change

Lianghong Ye, Junqing Ni, Zhongyi Yan, Zhanming Zhang, Can Zhu, Mo Sun   

  1. Department of Chemistry, Fudan University, Shanghai 200438, China
  • Received:2024-06-27 Accepted:2024-09-19 Published:2025-03-19
  • Contact: Mo Sun E-mail:mosun@fudan.edu.cn

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摘要： 介绍了一个普通化学实验“化学能驱动的非平衡态变色”，主要包括基于三溴乙酸引发的pH跳跃导致的甲基红变色反应，并利用pH计对这一过程的机制进行了探究。通过本实验，可以帮助学生理解热力学稳态、动力学控制的非平衡态和能量耗散的非平衡态；掌握缓冲溶液、pH指示剂的基本概念；以及巩固一些常用仪器的使用方法。

关键词: 非平衡态化学, pH跳跃, 甲基红变色, 普通化学实验

Abstract: 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.

Key words: Non-equilibrium chemisty, pH jump, Color change of methyl red, General chemical experiment