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可充电电池电极反应式的书写及应用,不仅是电化学教学的重点和难点,更是高考的热点题型之一.下面笔者就如何正确书写电极反应式进行了较为详尽的归纳,旨在“抛砖引玉”.一、解可充电电池试题必备知识1.对可充电电池充电和放电两过程认识:放电是原电池反应,充电是电解池反应.要能根据题给总反应式,写出原电池总反应式和电解池总反应式.2.对可充电电池电极极性和材料的判断:判断电池放电时电极极性和材料,可先标出放电(原电池)总反应式电子转移
Rechargeable battery electrode reaction writing and application, not only the focus and difficulty of electrochemical teaching, is one of the hottest entrance exam questions.The following author on how to correctly write the electrode reaction was a more detailed induction, designed to First, the rechargeable battery test questions necessary knowledge 1. The rechargeable battery charge and discharge two process awareness: discharge is the original battery reaction, the battery is the reaction of electrolysis. To be able to write according to the total reaction type, write Out of the total reaction of the original battery and the total reaction cell .2 rechargeable battery electrode polarity and material judgment: to determine the battery discharge polarity and material when the electrode can be marked discharge (primary battery) total reaction electron Transfer