aP4→PA,PD→PD AGFaRTLn4+dRiLn PA D>a4R)DA6司s0r C)Pc→PG,PH→PH 同理:△G3=gRTLn PG PH 9 a) P ` A →PA ,P ` D →PD ΔG1 =aRTLn ` A A P P + dRTLn ` D D P P b)aA(PA )+dD(PD )⎯T ⎯,P ⎯`IR→gG(PG )+hH(PH ) Δ r Gm, 2 =0 c)PG →P ` G ,PH →P ` H 同理:ΔG3 = gRTLn G G P P ' + hRTLn H H P P