为了减少苯跟氯气加成反应演示实验时氯气逸入空气的量,我们作了点小改进,按左图操作,则不仅减少了氯气污染,还简化了操作,省去了制氯装置,实验现象很明显。操作步骤:1.将一个已装有半药匙高锰酸钾的小药瓶,放入集气瓶中。2.再向小药瓶中快速滴入约1毫升浓盐酸,并随即用毛玻片盖住集气瓶口,稍留 In order to reduce the amount of chlorine escaped into the air during the demonstration reaction of benzene and chlorine gas, we made some minor improvements. Operating as left, we not only reduced the chlorine pollution, but also simplified the operation, eliminating the need for chlorine production. Experiment The phenomenon is obvious. Operation steps: 1. Put a small medicine bottle with half-medicine potassium permanganate into the gas collection bottle. 2 and then quickly dripped into small bottles of about 1 ml of concentrated hydrochloric acid, and then immediately cover with capillaries set gas bottle mouth, slightly left