一题多解在化学试题中经常碰到,旨在考查学生思维的敏捷性和灵活性.这类试题的特点往往是常规法与巧解法并存,若用常规思路解答,虽然能得到结果,但费时费力,复杂易错;若用巧解法则因解题方法简捷,独特,效率高,解题迅速,为考试赢得了宝贵的时间. Multiple solutions to a problem are often encountered in chemistry test questions to examine the agility and flexibility of students’ thinking. The characteristics of such questions are often the conventional method and clever solution method coexist. If answers are made by conventional ideas, although results can be obtained, It is time-consuming and laborious, complex and error-prone; if using clever solutions, the problem-solving method is simple, unique, efficient, and solves questions quickly, which has won precious time for the examination.