△H=△U+A(pV)Fp2V2-P1V1 =RT+bp2-RT-bp1=b(p2-P1) ● 因为此过程是一等温过程，有： +b(p2-p） △F=AG-△(p)=RTIn +b(p,-p）-b(p-p)=RTn P2 AS =AU-AF 0-RT In P T P2 • H = U＋(pV)= p2V2－p1V1 = RT+bp2－RT－bp1 = b(p2－p1 ) • 因为此过程是一等温过程，有： 2 2 1 1 2 1 2 1 1 ln ( ) p p p p RT p G Vdp b dp RT b p p p p      = = + = + −           2 2 1 2 1 2 1 1 1 1 ( ) ln ( ) ( ) ln p p F G pV RT b p p b p p RT p p      =  −  = + − − − =         2 1 1 1 1 2 0 ln sys ln p RT U F p p S R T T p   −    −       = = =    