1) An ideal gas undergoes the process A=>B=>C=>A shown in the figure above. The
ID: 2109852 • Letter: 1
Question
1) An ideal gas undergoes the process A=>B=>C=>A shown in the figure above. The heat gained in process AB is 576 J, while in process BC the system loses 67 J. In process AB the system performs 320 J of work, while in process CA work is done on the system in the amount of 238 J. How much heat is transferred to or from the system in process CA?
2) An ideal gas undergoes the process A=>B=>C=>A shown in the Figure above. PA = PC = 240.0 kPa, VB= VC = 40.00 L, VA = 15.00 L, and PB = 400.0 kPa. How much work is done by the system in this process?
3)An ideal gas undergoes the process a A=>B=>C=>A shown in the Figure above. PA = PC = 240.0 kPa, VB= VC = 40.00 L, VA = 15.00 L, and PB = 400.0 kPa. How much heat is gained by the system in this process?
Explanation / Answer
1)
Heat gained AB= 576J
Heat lost in BC = 67J
Total heat gained = 509 J
Work done by the system AB = 320 J
Work done on the system CA =238 J
Total Work done by the system = 82 J
Heat transfered from the system = 509 J - 82 J = 427 J
2)Work donre by the system = Are of the triangle = 0.5 x AC X BC
= 0.5 x 160 Kpa X 25 L
=2000 J =2KJ
3) Since internal energy of the system = 0 J as it is a cyclic process
Heat gained = work done
thus work done by the system = Are of the triangle.
Heat gained by the system = 2000 J = 2 KJ
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