Chapter 16, Problem 46PP

Compare the entropy change of the warmer water to that of the colder water during one cycle of the heat engine, assuming an ideal Carnot cycle.

1. A.    The entropy does not change during one cycle in either case.
2. B.     The entropy of both increases, but the entropy of the colder water increases more because its initial temperature is lower.
3. C.     The entropy of the warmer water decreases more than the entropy of the colder water increases, because some of the heat removed from the warmer water goes to the work done by the engine.
4. D.    The entropy of the warmer water decreases by the same amount that the entropy of the colder water increases