有关原电池中电极的判断,电极反应式的书写,或用以比较金属的活动性等方面的考查是高考命题的重点。但在原电池的教学中,对原电池中电解质的变化对电极反应的影响往往重视不够,致使在分析原电池反应、书写电极反应式时常常出错。为此我设计 The judgment of the electrode in the original battery, the electrode reaction type of writing, or to compare the activity of the metal test is the focus of the college entrance examination proposition. However, in the teaching of the original battery, the influence of the change of the electrolyte in the original battery on the electrode reaction often fails to be taken seriously, which often leads to mistakes in analyzing the original battery reaction and writing the electrode reaction type. I design for this