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一、水的电解现行四年制中等师范学校化学课本第一册第319页水的电解实验,从电解液中取出试管和检验气体,都不方便。我们做了以下改动。将12×120mm小试管底部在酒精喷灯火焰上加热至红软,用嘴吹出一个小尖嘴。用氢氟酸腐蚀试管,制成若干刻度。使用时先用肥皂将尖嘴封佳,使之不漏气。其它按书中要求做。检验两极产物时,先用大头针刺破肥皂封膜,迅速进行检验。
I. The electrolysis of water The current four-year secondary normal school chemistry textbook No. 1, page 319 of the water electrolysis experiment, remove the test tube from the electrolyte and test gas, are not convenient. We made the following changes. The bottom of the 12 x 120 mm cuvette was heated to the red flame on the flame of the alcohol torch, and a small tip was blown out of the mouth. The test tube was etched with hydrofluoric acid to make several graduations. When using, use a soap to seal the tip of the needle so that it will not leak. Others are required by the book. When inspecting the bipolar product, the soap seal is first punctured with a pin and the test is quickly performed.