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在无机化学沉淀理论的教学中,其核心是难溶电解质的溶度积常数Ksp。Ksp和难溶电解质摩尔溶解度S_0有密切关系,可以把Ksp表示成S_0的形式。并可应用S_0解决沉淀理论中的一些问题。特别是在解决不同类型的难溶电解质溶解度大反而溶度积小,沉淀转化的方向,分步沉淀的顺序和难溶氢氧化物的溶解等问题时较为严谨、简明。本文就难溶电解质摩尔溶解度S_0在教学中的应用谈一些看法。
In the teaching of inorganic chemistry precipitation theory, the core of which is the solubility product constant Ksp of insoluble electrolytes. Ksp and insoluble electrolyte molar solubility S_0 is closely related to Ksp can be expressed as S_0 form. S0 can also be applied to solve some problems in precipitation theory. In particular, it is more rigorous and concise to solve the problems that the solubility of different types of poorly-soluble electrolytes is large but the solubility product is small, the direction of precipitation conversion, the order of precipitation and the dissolution of insoluble hydroxides. This article discusses some of the applications of Moole solubility S0 in teaching.