有关Na_2CO_3、NaHCO_3互变的计算题是近几年高考试卷中的热点题。这种题综合性强,灵活多变,解答时常需加以讨论,是令人“伤脑筋”的题。但又是考查能力的好题。只要平时加强针对性训练,熟练掌握解题思路和规律,就能使问题迎刃而解,本文将此种题的四类常见题型及解答规律作以粗浅的探究。 题型Ⅰ:CO_2与NaOH反应型 The calculation questions about Na_2CO_3, NaHCO_3 interconversion are the hot topic in the high examination volume in recent years. This type of problem is comprehensive, flexible and flexible. The answers often need to be discussed. It is a “brainsome” question. But it is also a good question for examining ability. As long as we usually strengthen targeted training and master the problem-solving ideas and laws, we can solve the problems easily. This article will use four kinds of common question types and answering rules for such questions as a shallow exploration. Question I: CO_2 and NaOH Reaction Types