Introduction S.J.T.U. Phase Transformation and Applications Physical equilibrium. Chemical equilibrium. Activity Fugacity dG=VdrdG=-SdT+Vdp,withdT=O) dG=RTP RTdln P P SJTU Thermodynamics of Materials Spring2018©X.J.Jin Lecture 8 Chemical equilibriumPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2018 © X. J. Jin Lecture 8 Chemical equilibrium Introduction Physical equilibrium. Chemical equilibrium. Activity Fugacity dG =VdP(dG = −SdT +VdP,withdT = 0) RTd P P dP dG = R T = ln