有离子参加的反应称为离子反应,离子反应是高中化学的重点和难点,也是历年高考的必考内容.纵观各类高考,有关离子反应的考题主要有两大类型.一、判断离子能否共存的题型判断离子共存时总的原则是利用正负电荷互相吸引发生反应.确定好阳离子,则琢磨阴离子是否与之反应;若确定好阴离子,则考虑阳离子是否与之反应.主要可从强弱电解质的定义,能否发生氧化还原反应、络合反应以及生成难 Ions participate in the reaction is called ion reaction, ion reaction is the focus of high school chemistry and difficult, but also the compulsory content of college entrance examination over the years.Viewed all types of college entrance examination, the ion reaction of the test there are two main types. First, determine the ion energy Whether the coexistence of the problem to determine the coexistence of ions when the overall principle is the use of positive and negative charges to attract each other to react to determine a good cation, then pondering whether the reaction with the anion; if good anion, then consider whether the reaction with the cation. The definition of strong and weak electrolytes, can occur redox reaction, complexation reaction and the formation of difficult