热力学计算在水离子积常数与难溶物溶度积的教学中应用  

Application of Thermodynamic Calculationin Teaching of Water Ion Product Constant and Solubility Product of Insoluble Matter

作　　者：唐曾民 张巧 余茂林 许建雄 许利剑 TANG Zeng-min;ZHANG Qiao;YU Mao-lin;XU Jian-xiong;XU Li-jian(College of Life Science and Chemistry,Hunan University of Technology,Hunan Zhuzhou 412007,China)

机构地区：[1]湖南工业大学生命科学与化学学院,湖南株洲412007

出　　处：《广州化工》2024年第12期148-150,共3页GuangZhou Chemical Industry

基　　金：湖南省教育厅一般项目(21C0426)。

摘　　要：加强知识点之间的内在联系不仅能提高教学效果,还能培养学生的科学思维能力。本文将从化学反应基本原理入手,利用相关物质的热力学性质(焓、熵和吉布斯自由能)计算水离子常数与难溶物溶度积,并得到相关的计算值;然后结合计算值与参考值之间对比分所得的相对误差以验证二者之间的关联性,以期充分挖掘化学专业课程中知识点之间的逻辑连贯性并体现出化学的科学性。Strengthening the connection between knowledge points has been considered an effective way to improve teaching effectiveness and cultivate students scientific thought.This literature started from the basic principles of chemical reactions and utilized the thermodynamic properties of relevant substances(including enthalpy,entropy,and Gibbs free energy)to obtain a calculated value of the water ionic product and solubility product of insoluble substance.Then the relevance between the calculated value and reference value was verified by the relative error between these two values,which was obtained by comparative analysis.The purpose is to fully excavate the logical coherence between knowledge points in the course of Chemistry and reflect the scientific nature of chemistry.

关 键 词：化学平衡 吉布斯自由能 标准平衡常数 离子积 溶度积 

分 类 号：O642.1[理学—物理化学]