Thermodynamic activity(5) S.J.T.U. Phase Transformation and Applications f° 1.0 f ai 0 0 Pure > Figure 7.1 Fugacity of component i (f)and activity of component i (a as a function of mole fraction (x)for an ideal solution. SJTU Thermodynamics of Materials Spring20o6©X.J.Jin Lecture 12 Solution IPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2006 © X. J. Jin Lecture 12 Solution I Thermodynamic activity (5)