基于经典实验的教学改革模式探讨--以二元液系气液平衡相图实验的改进为例

Discussion on Teaching Reform Mode Based on a Classical Experiment:An Example of Experimental Improvement of the Gas-Liquid Equilibrium Phase Diagram with a Binary Liquid System

从实验装置、实验体系、溶液配制、数据测量等方面针对经典的物理化学实验(二元液系气液平衡相图)进行了综合性探索。减少了实验试剂消耗,缩短了实验时间,改善了实验的操作性和重现性,同时消除了实验过程中的安全隐患。经过多年工科专业学生实验教学实践表明,这些改进措施提升了学生的低碳环保理念,改善了实验的过程体验,强化了经典实验的创新效果。在引导学生深刻理解气液相平衡基础理论的同时培养了学生的应用创新思维,获得了良好的实验教学效果。

From the aspects of experimental device,experimental system,solution preparation,and data measurement,comprehensive exploration of the classical physical chemistry experiment“gas-liquid equilibrium phase diagram of a binary liquid system”was carried out.The consumption of experimental reagents was reduced,the experimental time was shortened,the operability and reproducibility of the experiment was improved,and the potential safety hazards in the experimental process were eliminated.After several years of engineering experiment teaching practice,these improvement measures are shown to enhance students’understanding of the low-carbon environmental protection concept,improve the experimental process experience,and strengthen the innovative effect of classical experiments.By guiding students to deeply understand the basic theory of gas-liquid phase equilibrium,these measures will help cultivate students’innovative thinking and obtain good experimental teaching evaluation.