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1、1、At300K,1moleidealgasexpandsfromp=10´pQtop=pQisothermallyandreversiblycalculate(1)Calculatetheq,w,DHm,DUm,DGm,DFmandDSm;(2)Ifthegasexpandsisothermallytoavacuumuntilthepressurereachesp=pQ,calculateq,w,DHm,DUm,DGm,DFmandDSm.2.Calculatetheequilibriumvapourpressure(atm)ofsodiumf
2、oranaluminummeltcontaining0.005mol%sodium(Na).Theactivitycoefficientofsodiuminaluminumis320andthevaporpressureofpuresodiumat750°Cis0.23atm.3、At413.15K，thevaporpressureofpureC6H5ClandC6H5Brare125.238kPaand66.104kPa.Giventhatthetwopureliquidsaremixedandformidealsolution.Ifasolu
3、tionformedbythetwopureliquidsboilsat413.15K、101.325kPa,pleasecalculatethecompositionofthesolutionandthevaporaboveit.IIIIII4、GiventhatwhenaspecieAinabinarysolution,itsvaporpressurevarieswithitsconcentrationinthepatternillustratedbelow.Makeatabletoindicatetheactivity,activityco
4、efficientandchemicalpotentialofAindifferentconcentrationsectionsI、IIandIII，usingitspuresubstanceasstandardstate.65、At300K,thevaporpressureofliquidAandliquidBare37.33kPaand22.66kPa.When2molesofAand2molesofBaremixedtoformasolution,thevaporpressureabovethesolutionis50.66kPa,andt
5、hemolarfractionofAinthevaporis0.60.Giventhatvaporscanbetakenasidealgases.①CalculateaA(R)andaB(R)inthesolution,②gAandgB,③DmixG,④Ifthesolutionisanidealsolution,whatisthevalueofDmixGid?⑤WhatisthevalueofDmixGexofthissolution?6、Thevariation,withcomposition,ofGEforFe-Mnalloysat1863
6、Kislistedbelow:XMn0.10.20.30.40.50.60.70.80.9GmE,Joules395703925105411001054925703395a、IstheprocesstoformFe-Mnalloyat1863Kanexothermiconeoranendothermicone?b.Doesthesystemexhibitregularsolutionbehavior?c.CalculateandatXMn=0.6;d.CalculateatXMn=0.4;e.Calculatethepartialpressure
7、sofMnandFeexertedbythealloyofXMn=0.27、MeltsinthesystemPb-Snexhibitregularsolutionbehavior.At473°C,aPb=0.055inaliquidsolutionofXPb=0.1.CalculatethevalueofforthesystemandcalculatetheactivityofSnintheliquidsolutionofXSn=0.5at500°C.8、WithrespecttotheEllinghamdiagram,answerthefoll
8、owingquestions:a)Explaintheslopechangesforthereaction2Mg+O2=2MgO;6b)
