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电化学知识是高考命题的热点之一,高考题中经常考查原电池与电解池的电路中的电子流向、电极放电顺序及应用、两极产物判断、电解质溶液中离子浓度变化或pH变化、根据离子或电解产物与电子的量的计算、反应时的现象等.针对这部分内容的考查,这几年高考题又有了新的考查视角,主要体现在以下几方面.一、考查与原电池与电解池有关的基础知识例1电池是人类生产和生活中的重要能量来源,各式各样电池的发展是化学对人类的一项重大贡献.下列有关电池的叙述正确的是().A.锌-锰干电池工作一段时间后碳棒变细
Electrochemical knowledge is one of the hot topics in college entrance examination, college entrance examination questions often check the circuit of the original battery and electrolytic cell flow direction, the electrode discharge sequence and application of bipolar product to determine the electrolyte concentration changes in ion concentration or pH changes according to ions Or electrolysis products and the calculation of the amount of electrons, the reaction time of the phenomenon, etc. For this part of the test, in recent years college entrance examination exam has a new test perspective, mainly reflected in the following aspects: First, test with the original battery Cell-related basics Example 1 Batteries are an important source of energy for human production and life, and the development of batteries of all kinds is a major contribution of mankind to chemistry. The following statements about batteries are correct (). Zinc - manganese batteries work after a period of carbon rod thinner