论文部分内容阅读
全日制十年制高中化学第一册 P117页上的课堂演示实验4—3,如按照课本讲述的方法进行实验,现象极不明显,达不到课堂演示实验的要求,且实验中所用催化剂(铂丝)的价格昂贵,普通中学购置有一定困难。为此我们将此实验进行了改进。采用氨气和氧气的混合气体,再让混合气体通过预热的催化剂 C_(r2)O_3,经我们多次实验证明效果比较理想。且改进后的实验具有装置简单,操作方便,实验时间短不需用价格昂贵
Full-time 10-year high school chemistry on the first page P117 page demonstration experiment 4-3, as described in the textbook method of experiment, the phenomenon is not obvious, can not reach the classroom demonstration experiments, and the experiment used in the catalyst Platinum wire) expensive, ordinary high school purchase has some difficulties. To this end we have made this experiment improved. Adopting the mixed gas of ammonia and oxygen, the mixed gas is passed through the preheated catalyst C_ (r2) O_3, and the results of our experiments show that the effect is quite satisfactory. And the improved experiment has the advantages of simple device, convenient operation, short experiment time and no need to be expensive