3.1 The property relation S.J.T.U. Phase Transformation and Applications A closed system consisting of a homogeneous material with uniform properties throughout First law:dU=80+oW Second law: ds= 82 w T T Tds =80-8lw dU Tds +W Slw Tas +Wrex All the work terms: dU =Tds-Pay Surface,electrical,stress effects,etc dH Tas Vap SJTU Physical Chemistry of Materials Spring 2005 ©X.J.Jin Lecture 5 property relationPhase Transformation and Applications S. J. T. U. SJTU Physical Chemistry of Materials Spring 2005 © X. J. Jin Lecture 5 property relation 3.1 The property relation A closed system consisting of a homogeneous material with uniform properties throughout. First law: = δ +δWQdU Second law: T lw T Q dS δ δ−= = δ −δlwQTdS = +δ +δ = +δWTdSlwWTdSdU rev All the work terms: Surface, electrical, stress effects, etc = − PdVTdSdU = +VdPTdSdH