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硝酸与金属的反应实验是高中化学重难点之一,也是历年高考的常考点。人教版教材没有安排实验,山东版教材安排了浓、稀硝酸与铜的反应实验,但因为是非密闭装置,所以有“在通风条件下进行”这一安全提示。因为硝酸与金属反应时,生成的氮氧化物是有毒气体,污染空气,所以教师在教学中,最多只是做一个浓硝酸与铜的反应实验,而稀硝酸与铜的反应很难观察到无色的一氧化氮这一现象。为了让学生能通过清晰的实验现象进一步推测反应产物,
Nitric acid and metal reaction experiment is one of the high school chemistry is one of the most difficult points, but also the usual test points over the years college entrance examination. PEP teaching materials did not arrange experiments, Shandong version of the textbook arrangement of concentrated, dilute nitric acid and copper reaction experiments, but because it is a non-airtight device, so there is “under ventilated conditions ” this safety tips. Because nitric acid and metal reaction, the generated nitrogen oxides are toxic gases that pollute the air, so teachers in teaching, at best, only a concentrated nitric acid and copper reaction experiments, and dilute nitric acid and copper reaction is difficult to observe colorless Of nitric oxide this phenomenon. In order to allow students to speculate on the reaction products through clear experimental phenomena,