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一、氯气和氢气化合反应的实验氯气和氢气化合反应的实验是中学化学实验中难度较大的实验之一,按照教材中介绍的用单根镁条燃烧产生的光,照射混合气体使其爆炸的做法,实验的成功率较低。主要原因是:光的强度不够,为增强光的强度,我们采用了燃烧以镁粉或铅粉为主要成份的发光剂的方法代替镁条的燃烧。几种发光剂:硝酸钾和镁粉;氯酸钾和镁粉;硝酸钾和铝粉;氯酸钾和铝粉;(用量都是各一药匙)用引燃剂点燃;如氯酸钾和蔗糖,用量各是两药匙,可以不加引燃剂,改用明火点燃。效果较好的引燃剂有过氧化钡、过氧化钠、氯酸钾和蔗糖、硝酸钾和蔗糖(用量都是半药匙),如用硝酸钾、硫粉、木炭粉,质量比为6∶1∶1,共计一药匙。以上均可以任选一种,用明火点燃。
First, the chlorine and hydrogen chemical reaction experiment Chlorine and hydrogen chemical reaction experiment is a high school chemistry experiment difficult one of the experiments, according to the teaching materials described in a single magnesium bar burning light, exposure to mixed gas explosion Practice, the success rate of the experiment is low. The main reason is: light intensity is not enough, in order to enhance the intensity of light, we use a method of burning magnesium powder or lead powder as the main component of light-emitting agent instead of magnesium burning. Several luminescent agents: potassium nitrate and magnesium powder; potassium chlorate and magnesium powder; potassium nitrate and aluminum powder; potassium chlorate and aluminum powder; (each dosage is a spoon) lit with a pilot; such as potassium chlorate and sucrose, Two spatula, you can not add ignition agent, switch to open flame ignition. Better effect of the ignition agent barium peroxide, sodium peroxide, potassium chlorate and sucrose, potassium nitrate and sucrose (dosage is half a spoon), such as potassium nitrate, sulfur powder, charcoal powder, mass ratio of 6: 1 : 1, for a total of one spoon. Any of the above can be any kind, with a light fire.