在定性分析教学中引入竞争平衡常数,通过理论计算,能定量判别沉淀与各平衡的竞争结果,达到分离的目的,这在理论上和实践上都有重要意义,有利于培养学生分析问题和解决问题的能力. In the qualitative analysis of the introduction of the teaching of equilibrium constant, through theoretical calculations, can be quantitatively determine the precipitation and the balance of competition results, to achieve the purpose of separation, which in theory and in practice are of great significance to help students analyze and solve problems The problem’s ability.