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一、食鹽的電解食鹽(NaCl)的電解是比較容易的,这裹主要說明兩個問題:(一)碳精电極的使用,(二)石蕊指示劑的使用。因為鉑價值昂貴又很容易受到新生氯的侵蝕,所以電解氯化鈉或其他氯化物,絕对不能使用鉑制電極。在苏联十分重視鈤的節約,如陶里亞赤金编七年制学校物理教学法第二册中,認為電解食鹽交流用碳製電極,可用弧光灯的細碳棒(1948年俄文版第308頁);甚至还提議在電解水所用的好夫曼(Hoffmann)儀器中,只陽極用鉑制(同書第331頁)。我們使用的是废乾電池中取出的碳棒,裝置如圖1。U形管中置飽和食鹽溶液,加入少
First, the electrolysis of salt electrolysis salt (NaCl) is relatively easy, which wrapped mainly illustrates two issues: (a) the use of carbon electrode, (b) the use of litmus indicator. Because platinum is expensive and easily eroded by nascent chlorine, never use platinum electrodes with electrolytic sodium chloride or other chlorides. In the Soviet Union attaches great importance to the savings, such as Togliuchu gold seven-year school physics teaching method in the second book, that the exchange of salt and carbon electrodes, available arc lamp carbon rod (1948 Russian version 308 Page). It is even proposed that only the anodes be made of platinum in the Hoffmann apparatus used for the electrolysis of water (p. 331). We are using the waste carbon batteries removed from the battery, the device shown in Figure 1. U-shaped tube in the home saturated salt solution, add less