n=1mol,T1=273K,p1=200KPa,T2=323K,p2=100Kpa,Cv,m=1.5R,Cp,m=2.5R,R=8.314J/molK.1.恒压p1=200KPa下,由T1升为T2,根据pV=nRT容易求出此过程的V1=nRT1/p1和V2=nRT2/p1Q1=△H1=nCp,m (T2-T1).W1=-p1(V2-V1),或=-nR(T2-...
n=1mol,T1=273K,p1=200KPa,T2=323K,p2=100Kpa,Cv,m=1.5R,Cp,m=2.5R,R=8.314J/molK.1.恒压p1=200KPa下,由T1升为T2,根据pV=nRT容易求出此过程的V1=nRT1/p1和V2=nRT2/p1Q1=△H1=nCp,m (T2-T1).W1=-p1(V2-V1),或=-nR(T2-...