FIGURE 18-3
-An ideal gas undergoes the process a→b→c→a shown in Figure 18-3. The heat gained in process a→b is 546 J, while in process b→c the system loses 62 J. In process a→b the system performs 310 J of work, while in process c→a work is done on the system in the amount of 223 J. How much heat is gained by the system in process c→a?

Question

FIGURE 18-3 
-An ideal gas undergoes the process a→b→c→a shown in Figure 18-3. The heat gained in process a→b is 546 J, while in process b→c the system loses 62 J. In process a→b the system performs 310 J of work, while in process c→a work is done on the system in the amount of 223 J. How much heat is gained by the system in process c→a?

Quizplus · Accepted Answer

The net heat gained by the system is equal to the net work done by the system. In this case, the net work done by the system is 310 J - 223 J = 87 J. Therefore, the net heat gained by the system is also 87 J. Since the system loses 62 J in process b→c, it must gain 87 J + 62 J = 149 J in process c→a.

FIGURE 18-3 -An Ideal Gas Undergoes the Process A→b→c→a Shown in Figure