苯与液溴的反应是高中有机化学非常重要的制备实验之一,但教材中的演示实验存在如下问题。如按照人教版高中化学课本第二册做演示实验,一是反应容器的容积过大,药品用量多,造成药品浪费;二是装置不密闭,无法避免苯、溴和溴化氢对空气的污染。如按照上海二期课改 The reaction of benzene with liquid bromine is one of the most important preparative experiments in high school organic chemistry. However, the demonstration experiment in the textbook has the following problems. For example, according to the People’s Education Edition High School Chemistry Book 2, a demonstration experiment was conducted. The first one is that the volume of the reaction container is too large and the dosage of the drug is large, resulting in the waste of medicines. Second, the device is not closed and can not avoid benzene, bromine and hydrogen bromide Pollution. If according to shanghai second class curriculum reform