电解质溶液的离子浓度等量比较,一直是高考化学中的热点和难点.常用工具是3个守恒:电荷守恒、物料守恒和质子守恒,其中学生最生疏,应用时错误最多的无疑是质子守恒.很多学生在书写质子守恒时采用先书写电荷守恒和物料守恒,再约去的方法,虽然这样书写可以大大降低难度,但比较繁琐和费时,而且一旦遇到物料守恒也不易书写的情况,就束手无策了.下面介绍一种直接书写质子守恒的方法:框图法.具体步骤如下: Electrolyte solution ion concentration equal comparison has been a hot and difficult college entrance examination chemistry commonly used tools are three conservation: conservation of charge, conservation of materials and proton conservation, of which students are the most rusty, the most error when applied is undoubtedly the proton conservation. Many students use the method of conservation of charge and conservation of materials before writing proton conservation. Although writing can greatly reduce the difficulty, it is more complicated and time-consuming. Here is a direct way to write proton conservation: block diagram method. Specific steps are as follows: