物理化学渗透压双语版省公共课一等奖全国赛课获奖课件.pptx

Chapter 7:Slide 1Osmosis 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 solventVant Hoff equation:Osmometry -determination of molar mass by measurement of osmotic pressure macromolecules(proteins and polymers)第1页Following we will show how to prove:第2页Besides:so-lnXa=-ln(1-Xb)=Xb change p to p+，when change is very small，the integrator can be treated as constants。第3页Chapter 7:Slide 4Solvent A with chemical potential mA*(p)SemipermeableMembraneHeight Proportional to Osmotic Pressure PSolutionOsmosis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页血浆渗透压在医学上有很应用，血浆渗透压对保持人体正常生理功效和身体健康有着亲密关系。临床上对病员进行输液,一些药品使用及配制等,都包括溶液渗透压问题。接下来我们将讨论怎样计算等渗溶液浓度，像NaCl注射液，葡萄糖注射液。第6页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 1.86As第7页 第8页 QuestionQuestion：according to the result of on the topic,could you tell me 1 dm3 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 in physiological saline injection contains how many grams of NaCl is needed to have the same as the blood of the osmotic pressure.to have the same as the blood of the osmotic pressure.As As b bB B=0.3011=0.3011when mA=1.0kg（Set the density of normal saline injection 1kgdm3）(about 0.9)第9页