一、改进要点:不是按课本直接用浓氨水,鼓空气的方法做实验。而是用氨气和空气直接混和实验。催化剂改用铜丝。二、操作方法:取一个100ml 干燥且预热的平底烧瓶,按下图1对准浓氨水的试剂瓶口,收集氨气5至7秒钟。然后将烧瓶口朝下平移开,立刻将带有烧红铜丝的橡皮塞插入烧瓶(如下图2)。铜丝继续红热,然后正放在桌上(如下图3)。约过5秒 First, to improve the point: not by textbook directly with concentrated ammonia, air drum method to experiment. Instead, ammonia and air are directly mixed experiments. Catalyst switch to copper wire. Second, the method of operation: Take a 100ml dry and preheated flat-bottomed flask, press Figure 1 aligned aqueous ammonia reagent bottle port, collecting ammonia for 5 to 7 seconds. Then the mouth of the flask is translated downwards and the rubber stopper with the burned red copper wire is immediately inserted into the flask (Figure 2 below). The copper wire continues to be red hot, and is on the table (Figure 3 below). About 5 seconds