回顾近几年的全国高考化学试题,离子反应一直是高考的常客,多以判断离子反应方程式正误、离子能否在溶液中大量共存等题型出现。判断离子能否在溶液中大量共存题目中,一些重要离子重现率更高,希望同学们复习时应注意这些特点, Review of the national college entrance examination in recent years, chemical tests, ion reaction has been a frequent visitor to college entrance examination, mostly to determine the ion reaction equation is correct, ions can coexist in solution a lot of questions such as type. Determine whether the ions coexist in solution in a large number of topics, some of the more important ion reproduction rate, I hope students review should pay attention to these features,