Answer Happy

A plot of pressure-volume isotherms for an ideal gas at two different temperatures is shown below. In which of these processes would AH(gas) > 0? **** T = 546 K T = 273 K 25 20 State Z 15 10 5 Pressure (Atm) State X 2 State Y Volume (L) 6 8

A) X → Y B) Y → Z C) Z → X D) X Y and Y → Z E) Y Z and Z → X