物理化学渗透压双语版.pptx

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Chapter 7:Slide,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,物理化学 课件,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,物理化学 课件,Chapter 7:Slide,1,Osmosis,for Greek word“push”,Spontaneous passage of a pure solvent into a solution separated from it by a semi-permeable membrane(membrane permeable to the solvent,but not to the solute),Osmotic pressure,P,the pressure that must be applied to the solution to stop the influx of the solvent,Vant Hoff equation,:,Osmometry -determination of molar mass by measurement of osmotic pressure macromolecules(proteins and polymers),第1页,第1页,Following we will show how to prove:,*,*,*,第2页,第2页,Besides:,so,As,，,-lnXa=-ln(1-Xb)=Xb,change,p,to,p,+,，when change is very small，the integrator can be treated as constants。,第3页,第3页,Chapter 7:Slide,4,Solvent A with chemical potential,m,A,*,(,p,),Semipermeable,Membrane,Height Proportional to Osmotic Pressure,P,Solution,Osmosis,第4页,第4页,There are the application of plasma osmotic,pressure in medicine,.Plasma osmotic pressure for normal physiological function and physical health has a close relationship.On patient clinical transfusion,the use of certain drugs and preparation involves solution of osmotic pressure problem.Then we will discuss how to calculate the concentration of isotonic solution,likeNaCl injection and glucose injection,第5页,第5页,血浆渗入压在医学上有很应用，血浆渗入压对保持人体正常生理功效和身体健康有着密切关系。临床上对病员进行输液,一些药物使用及配制等,都涉及溶液渗入压问题。接下来我们将讨论如何计算等渗溶液浓度，像NaCl注射液，葡萄糖注射液。,第6页,第6页,。,Known as,c,=,b,，because blood is very dilute aqueous solution,think its density with water Same degree of approximation，,c,=,b,，So,Blood is macromolecular aqueous solution,the human body blood freezing point of 272.59 K.,(1)the body temperature of 37 when blood osmotic pressure;,(2)at the same temperature,1 dm3 glucose(C6H12O6)in aqueous solution containing how many grams of glucose is needed to have the same as the blood of the osmotic pressure.The freezing point of water is known to reduce coefficient of 1.86,As,第7页,第7页,（,2,）As ，when,m,A,=1.0kg,（think the,density of glucose is,1kgdm,3,），,(,about,5.4,),第8页,第8页,Question,：according to the result of on the topic,could you tell me 1 dm3 in physiological saline injection contains how many grams of NaCl is needed to have the same as the blood of the osmotic pressure.,As,b,B,=0.3011,when,m,A,=1.0kg,（Set the density of normal saline injection,1kgdm,3,）,(,about,0.9,),第9页,第9页,