2.1 Entropy as a State Function(6) S.J.T.U. Phase Transformation and Applications Adiabatic irreversible AU=O+W=0 adiabatic and vacuum The final condition of the gas in the second case is same as the final condition of the gas in the first case. -l 2=0- w -RT In 2-0 RIn2 T T T T Adiabatic Irreversible 2V SJTU Thermodynamics of Materials Spring2010©X.J.Jin Lecture 3 Second law IPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2010 © X. J. Jin Lecture 3 Second law I 2.1 Entropy as a State Function(6) U  QW  0 adiabatic and vacuum Irreversible ln 2 ln 2 0 0 R T RT T lw T lw T Q S actual            Adiabatic The final condition of the gas in the second case is same as the final condition of the gas in the first case. Adiabatic irreversible