论文部分内容阅读
一、常规实验的缺陷控制难:电石吸水性强,教材中用饱和食盐水以降低反应速率,并用分液漏斗控制液体流速,但乙炔气流仍过快过急,难以在短时间内完成一系列性质实验,且产生的大量泡沫可能堵塞导气管。反应难以随时控制其开始与停止。操作繁:常规实验分步进行乙炔的性质实验,操作烦琐,过程中损耗了乙炔且用时长。不环保:常规实验使用药品量多,易造成浪费且无形中提高了实验的危险性。溴的四氯化碳溶液暴露在空气中会挥发出溴蒸气及四氯化碳,污染空气。
First, the conventional experimental defect control difficult: calcium carbide water absorption, textbooks with saturated salt water to reduce the reaction rate, and with a separatory funnel to control the liquid flow rate, but acetylene gas flow is still too fast too fast, it is difficult to complete a series of short period of time The nature of the experiment, and the resulting large amount of foam may block the airway. It is difficult for the reaction to control its start and stop at any time. Operation complicated: routine experiments step by step acetylene nature of the experiment, cumbersome operation, the process of loss of acetylene and use time. Not environmentally friendly: the amount of conventional experimental drugs used, can easily lead to waste and virtually improve the experimental risk. Bromine carbon tetrachloride solution exposed to the air will volatilize bromine vapor and carbon tetrachloride, air pollution.