Question
Cyclic Process A cylinder contains oxygen at P = 2.00atm. The volume is 4.0L, and the temperature is 300K. Assume an ideal gas as the
Cyclic Process A cylinder contains oxygen at P = 2.00atm. The volume is 4.0L, and the temperature is 300K. Assume an ideal gas as the oxygen undergoes the following processes: (i) Heated isobarically from initial state (1) to state (2) at T = 450K; (ii) Cooled at constant volume to state (3) at T = 250K; (iii) Compressed at constant temperature to 4.00L in state (4); (iv) Heated at constant volume to 300K, taking the system back to state (1). a) Show these four processes in a PV-diagram, giving numerical values to P and V. b) Calculate Q and W for each of the four processes. c) Find the net work done by the oxygen gas. d) What is the efficiency of the device as a heat engine? e) Compare the efficiency in (d) to that of a Carnot-cycle engine operating between the same minimum and maximum temperatures of 250K and 450K.
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