关于溶液中离子是否能大量共存问题,是历年来高考的必考内容,这类题型综合性比较强,涉及面广,知识内容跨越性大,学生对这类问题往往难以准确的做出正确解答,主要原因有两点, The question of whether or not ions in the solution can coexist in large quantities is a must-examined content of the college entrance examination over the years. Such questions are comprehensive, involve a wide range of areas, and have a wide span of knowledge content. It is often difficult for students to correctly make such questions. There are two main reasons for answering.