U=G+Ts-pV dU=TdS-pdv+udn U=U(S,,n) aU aU aU aS an H=G+TS=U+pr dH= Tas+vdp+udn H=HS,P, n) aH V:/Ou aH S p,n on丿s,pU = G +TS − pV dU = TdS − pdV + dn U =U(S,V, n) n S V U ,          = S V n U T ,         = V S n U p ,         = − H = G +TS =U + pV dH = TdS +Vdp + dn H = H(S, p, n) n S p H ,          = S p n H T ,         = S n p H V ,           =