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读了化学通报1957年4月号史汉强同志的关于用一端封口的玻璃管来做化学实验的文章我感到很有兴趣;的确有许多实验是可以用这种方法来进行的,它具有用量少效果好简单清晰容易说明问题,如果试验气体决不会有漏气的优点,这种实验最适合用于边教边实验或学生分组实验的课上。木材的干馏也可以采用这种方法。如图装置实验时先将玻璃管甲取下在中间放入6—7根火柴梗后再装上,用酒精灯火焰在放有火柴梗的部分加热不多时就可看到火柴梗的变黑和白烟的形成现象并有黄色的液
I was very much interested in reading the article in the Chemical Bulletin, April 1957, by Comrade Shihan Qiang about the chemical experiment with a glass tube sealed at one end. There are indeed many experiments that can be carried out in this way. Good results Simple and easy to explain the problem, if the test gas will never have the advantages of leakage, this experiment is most suitable for the side of the edge of the experiment or student group experiments. Wood dry distillation can also use this method. As shown in Figure device experiment first remove the glass tube in the middle into the 6-7 matchstick after the installation, with the alcohol lamp flame placed in the matchstick part of the heating is not much can be seen when the matchstick black And white smoke and the formation of a yellow liquid