小议稀硝酸与铜的反应实验改进

Discussion on Improvement of Reaction Experiment between Dilute Nitric Acid and Copper

铜和稀硝酸的反应是高中化学中的重要知识点。但是由于铜与稀硝酸反应会生成一氧化氮(NO)气体,具有一定的危险性,因此教材中使用了复杂的实验装置,采用了老师示教、学生观察的教学方式,没有要求学生对该实验的操作。本文在对教材中实验装置分析的基础上,对反应装置进行了改进。改进后的实验简单高效,便于学生自己操作,有助于培养学生的实验探究能力。

The reaction between copper and dilute nitric acid is an important knowledge point in high school chemistry.However,because the reaction of copper and dilute nitric acid will produce nitric oxide（NO） gas,which has a certain risk,in the teaching material,it adopted a complex experimental device and the teaching method of teacher teaching and student observation,and did not require students to operate on the experiment.Based on the analysis of the experimental device in the teaching material,this paper improved the reaction device.The improved experiment is simple,efficient and convenient for students to operate by themselves,which helps to cultivate students＇ ability of experimental inquiry.