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铜与硝酸的反应在中学化学的学习中非常重要,但是课改后的新教材中只简单地写了这两个化学方程式,并没有给出演示实验。老教材上的演示实验不利于NO_2和NO气体性质的探究。
The reaction of copper with nitric acid is very important in the study of chemistry in middle school, but the two new chemical equations are simply written in the new textbook after the reform, and no demonstration experiment is given. Demonstration experiments on old textbooks are not conducive to the exploration of the properties of NO 2 and NO gases.