1Physical Chemistry I for BiochemistsChem340Lecture 2 (1/14/09)Yoshitaka Ishii•Gas Ch. 1•Non-Ideal Gas (Ch 1 & Raff p21-41)Correction of Homework (p1.30 in text p13)• Pi= Pi0exp(-Mig/RT) ÆPi= Pi0exp(-Migz/RT)If you find any corrections needed in your homework, please let me know it.
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2Ideal Gas Eq. using molar densityPV = nRTP, T, ρ: Intensive variable (variables that does not depend on the size of the system)n, V: Extensive variable (those that depend on the size)P = ρRT ÅThis depends on only three intensive variable. ρIs called molar densityIsotherms, isobars, isochores•Isotherm: T = constant ÆPV/n = const•Isobar: P =constÆV/nT = const •Isochore (or isovolumetric): V = const•P/nT = constT increase02040608000.511.521/V (1/m3)P (Pa)