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原电池是将化学能转变成电能的装置,构成原电池的一般条件是:1.两个活泼性不同的电极;2.电解质溶液;3.形成闭合回路;4.能自发发生氧化还原反应。通常是活泼的金属作负极,金属本身被氧化;不活泼的金属或非金属作正极,溶液中的阳离子被还原。以上“一般”“通常”的描述,是指有许多原电池表面上不符合以上的规律,却能够放电;有的看似符合构成原电池的条件,却又不能产生电流。现将一些具有“反常”现象的例子,归纳分析如下,以便于理解学习。
The original battery is the chemical energy into electrical energy devices, the formation of the original battery conditions are: 1. Two lively different electrodes; 2. Electrolyte solution; 3. To form a closed loop; 4. Spontaneous oxidation and reduction reactions. Usually lively metal as a negative, the metal itself is oxidized; Inactive metal or non-metallic anode, the solution of the cation is reduced. The above description of “normal ” “usually ” means that there are many original batteries that do not conform to the above rules on the surface but are capable of discharging; some may appear to be in conformity with the conditions of the original battery, but they will not generate current. Now some examples of “abnormal ” phenomenon, summarized as follows, in order to understand learning.