1. (a)What are the signs of ?S and ?H for the process depicted here ?G?
(b) How might temperature affect the sign of?
(c) If energy can flow in and out of the system to maintain a constant temperature during the process, what can you say about the entropy change of the surroundings as a result of this process?
2. The accompanying diagram shows how entropy varies with temperature for a substance that is a gas at the highest temperature shown.
(a) What processes correspond to the entropy increases along the vertical lines labeled 1 and 2?
(b) Why is the entropy change for 2 larger than that for 1?
