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所在平台: Udemy |
课程主页: https://www.udemy.com/course/solutions/
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Coursera 课程“溶液”摘要： 本课程深入探讨了溶液的核心概念。溶液被定义为一种组分极其均匀混合、无法单独观察到的混合物。其中，被溶解的物质称为溶质，而溶解溶质并形成均一混合物的介质称为溶剂。 课程详细介绍了溶解度，即在给定温度下，100克溶剂中溶解溶质的量，形成饱和溶液。饱和溶液是指在给定温度下，溶质溶解达到最大限度的溶液。若溶液中溶质含量少于饱和所需的量，则称为不饱和溶液。而当溶液中溶质含量超过饱和度时，则称为过饱和溶液。 此外，课程还概述了溶液的分类。根据溶质和溶剂的状态（气、液、固），可分为九种二元溶液。其中，液相溶液因其重要性被进一步细分为三种主要类型：固-液溶液、液-液溶液和气-液溶液。
A solution is a mixture in which substances are intermixed so intimately that they can not be observed as separate components". The dispersed phase or the substance which is to be dissolved is called solute, while the dispersion medium in which the solute is dispersed to get a homogenous mixture is called the solvent.Solubility: "Solubility of a substance may be defined as the amount of solute dissolved in l00 gms of a solvent to form a saturated solution at a given temperature".A saturated solution is a solution which contains at a given temperature as much solute as it can hold in presence of dissolving solvent. Any solution may contain less solute than would be necessary to saturate it.When the solution contains more solute than would be necessary to saturate it then it is termed as supersaturated solution.Kinds of solutions: All the three states of matter (gas, liquid or solid) may behave either as solvent or solute. Depending on the state of solute or solvent, mainly there may be following nine types of binary solutions.Among these solutions the most significant type of solutions are those which are in liquid phase and may be categorised as,(1) Solid in liquid solutions,(2) Liquid in liquid solutions and(3) Gas in liquid solutions.
