Physical Chemistry Material Equilibrium Application of Maxwell Relations Example 2: Calculate 4U when an ideal gas changes from PI,V, T, to P2,2, T2 (Hint: applying/ou Answers U=U(7,V) aU aP P aT aU T+aU aT aP dT+ P ldv aT △U=∫Gd+ aP P aTPhysical Chemistry Material Equilibrium Application of Maxwell Relations Example 2: Calculate U when an ideal gas changes from P1 , V1 , T1 to P2 , V2 , T2 . (Hint: applying ) V T U         U U T V = ( , ) Answers. dV V U dT T U dU V T          +        = P dV T P C dT T V V        −        = + P dV T P U C dT T V  V         −         = + P T P T V U T V  −         =       