物理化学渗透压双语版

1、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 th

2、e solventVant Hoff equation: Osmometry - determination of molar mass by measurement of osmotic pressure macromolecules (proteins and polymers)Bc RTP Following we will show how to prove : * *AAA( )(,)pxpP*AAAA(,)()lnxppRTxP P * *A,A()( )dpAmpppVpPP * ,AlnpAmpRTxVdpPBesides:so B,AmRTxVP As ， BBA,/, VA

3、m Axnnn VBRTnVP Bc RTP -lnXa=-ln(1-Xb)=Xb change p to p+P P， when change is very small，the integrator can be treated as constants。 Chapter 7 : Slide 4Solvent A with chemical potential A*(p)SemipermeableMembraneHeight Proportional to Osmotic Pressure PSolutionOsmosis There are the application of plas

4、ma 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 c

5、oncentration of isotonic solution,likeNaCl injection and glucose injection 血浆渗透压在医学上有很的应用，血浆的渗透压对保持人体正常生理功能和身体健康有着密切关系。临床上对病员进行输液,某些药物的使用及配制等,都涉及溶液渗透压问题。接下来我们将讨论如何计算等渗溶液的浓度，像NaCl注射液，葡萄糖注射液。1Kk gm o l ,Bff bTKb-1-1B273.15272.59mol kg0.30mol kg1.86ffTbK Known as c = b，because blood is very dilute aque

6、ous solution, think its density with water Same degree of approximation，c =b，So 5BB0.38.314 (273.1537)Pa7.73 10 Pa1/1000nc RTRTVP 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 tempe

7、rature, 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 （2）As ，when mA=1.0kg（think the density of glucose is 1kgdm3），）， -1BBA0.30mol

8、kgbnm11BBBBdm()dmbnmM3-1BBB0.3011 180 10 kg dmmM b-1-10.054kg dm54g dm (about5.4) 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 in physiological saline injection contains how many grams of NaCl is needed to have the same as the blood of the osmotic pressure.needed to have the same as the blood of the osmotic pressure.RTbRTbBB1000P310314. 83011. 01000kPa776As As b bB B=0.3