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众所周知,实验是化学教学中的重要环节之一。借助于直观的实验现象,不仅可以帮助学生理解和记忆化学反应,而且巧妙的实验构思有助于理解抽象的化学概念。本文介绍一种分子间力的演示实验,以飨读者。一、原理本实验通过盐析使有机相从水相中分离出来。在有机溶剂和水的互溶混合
As we all know, experiment is one of the important links in chemistry teaching. With the help of intuitive experimental phenomena, not only can students understand and remember chemical reactions, but clever experimental ideas help to understand abstract chemical concepts. This article describes a demonstration experiment of intermolecular forces for readers. I. Principle In this experiment, the organic phase was separated from the aqueous phase by salting out. Miscible mixing of organic solvents and water