A sample containing 1.75 mol of an ideal gas at 325 K is expanded from an initial volume of 15.5 L to a final volume of 75.0 L. Determine delta A and delta G for this process for
1. An isothermal expansion against a constant external pressure of 0.750 bar.
2. An isothermal reversible path and discuss why delta G and delta A do or do not differ from one another.