1.15 Equations of State (4) S.J.T.U. Phase Transformation and Applications Difference in heat capacities of an ideal gas. c-c-(8 H=U+PY G-q D SJTU Thermodynamics of Materials Fall 2012 ©X.J.Jin Lecture 2 First Law llPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2012 © X. J. Jin Lecture 2 First Law II 1.15 Equations of State (4) Difference in heat capacities of an ideal gas. P V P V T U T H C C                    H U  PV P P T P V P T U T H                           P P V P V T U T V P T U C C                            