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高中化学第二册介绍了工业上用电解饱和食盐水溶液的方法来制取烧碱、氯气和氢气,及立式隔膜电解槽的结构.由于2605型食盐水电解槽在三类学校不予配备,只能利用课本41页图1—13所示的实验装置来进行实验,以致在阴极上生成的气体不能检验,因而单靠这一演示不能满足教学的需要.如果设法将阴极上生成的气体收集起来,经检验能证明它确是氢气,那么就可以说明工业上用电解食盐水法制取氢氧化钠、氯气和氢气的原理了.基于这一思想,我们在前述装置的基础上作了一些改进,制成了电解食盐水演示器.
The second volume of High School Chemistry describes the industrial use of electrolytically saturated saline solutions for the preparation of caustic soda, chlorine and hydrogen, and the structure of vertical diaphragm cells. Since Type 2605 brine electrolyzers are not equipped in three types of schools, only The experiments can be performed using the experimental apparatus shown in Figure 1-13 on page 41 of the textbook so that the gas generated at the cathode cannot be examined. Therefore, this demonstration alone cannot satisfy the teaching needs. If you try to collect the gas generated on the cathode The test can prove that it is indeed hydrogen, then it can explain the principle of industrial production of sodium hydroxide, chlorine and hydrogen using electrolytic salt water method. Based on this idea, we made some improvements on the basis of the aforementioned device. Made electrolytic salt water demonstrator.