1. The problem statement, all variables and given/known data Calculate changes in A and G of one mole of an ideal gas that undergoes the following processes respectively. 1. adiabatic expansion from (T1, P1) to (T2, P2) 2. isobaric expansion from (P, V1, T1) to (P, V2, T2) (if it is not isothermal) 3. isochoric expansion from (V, P1, T1) to (V, P2, T) (if it is not isothermal) 2. The attempt at a solution I can get a solution for isothermal processes, but for cases that temperature changes, I cannot calculate changes of A and G because I cannot even find a clue for handling d(TS) = TdS + SdT. I tried to solve these by using the Gibbs-Helmholtz equation, but I failed. And also I separated the path into two steps, but I failed again. How can I calculate the change in A and G for processes in which temperature changes? Thank you.