文档介绍：Chapter 2Chapter 2Solutions and ColloidsSolutions and Colloids溶液与溶胶溶液与溶胶solutions, alloyssolutions, alloys合金合金, , air? What are they?air? What are they?1 1 Solutions Solutions 溶液溶液①①DefinitionDefinition定义定义: : one or more species dissolve in one or more species dissolve in another substance, usually in substance, usually in water.**Solute Solute 溶质溶质: : the substance dissolves the substance dissolves 溶解溶解..**Solvent Solvent 溶剂溶剂: : the substance in which the solute substance in which the solute dissolves.** Solution Solution 溶液溶液::the homogeneous the homogeneous 均相均相mixture of solutes mixture of solutes and solventsand solventsSection 1 Dispersions Section 1 Dispersions 分散体系分散体系The concentrations The concentrations 浓度浓度of solutions can be of solutions can be expressed in different in different . the mass fraction 1. the mass fraction 摩尔分数摩尔分数of the species B of the species B 物质物质BB::2. 2. the the molaritymolarity摩尔浓度摩尔浓度of the species B:of the species B:Dimension Dimension 单位单位: : molmol··LL??11no dimension no dimension 无量纲无量纲溶剂溶质nnnBB???溶液BBVnc?The Concentrations of The Concentrations of SolutionsSolutions溶液浓度溶液浓度3. 3. the the molalitymolality重量摩尔浓度重量摩尔浓度of the species B:of the species B:Dimension: molDimension: mol··kgkg??11溶液重量mnmBB?DispersionDispersion分散体系分散体系: : one or more species disperse in one or more species disperse in another substance. another substance. DispersionDispersion分散体系分散体系??Solutions Solutions 溶液溶液, , ??suspensions suspensions 悬浊液悬浊液, , ??emulsionsemulsions乳浊液乳浊液and and ??colloids colloids 胶体胶体are the real forms of the real forms of examples of dispersions:Some examples of dispersions:DispersoidDispersoid分散相分散相DispersantDispersant分散剂分散剂dispersiondispersionHomo-Homo-NaClNaCl(Na(Na++,,ClCl??) H) H22O O Solution Solution溶液溶液geneous geneous 66HH66(benzene(benzene))SolutionSolutionHetero-Hetero-SlurrySlurry泥浆