铜与硝酸反应的绿色化设计

化学实验教学实现绿色化思想的关键有两点:一是挥发有害物质的化学反应在完全密封状态下进行；二是实验产物的无害化处理.利用U型管巧妙设计,可使铜与浓、稀硝酸反应的毒气实验在密闭环保中进行,同时达到了绿色化尾气处理利用NO与浓HNO3反应,可证明铜与浓硝酸反应为什么生成的是NO2而不是NO,从事实上为学生纠错提供了有力判据.

Green Design on the Reaction of Copper and Nitric Acid

To achieve green ideas on chemical experiment teaching has to hold two critical points: One is that chemical reactions of harmful volatile materials must be carried out in completely sealed condition;The other is that products need harmlessly be treated for environment.In this paper,using U pipe,the reaction of copper and concentrated/dilute nitric acid can be guaranteed in sealed surroundings and the tail gas was harmlessly treated.The reaction of nitric oxide and concentrated nitric acid demonstrated that...