Question

A closed piston-cylinder system contains a 120 moles of neon, a monatomic ideal gas, at pressure P_A = 2.5 atm and volume V_A = 0.80 m³. It undergoes the following cyclic process:

A -> B: I There is isothermal expansion to volume double of the original.

B -> C: Constant-volume process back to its original pressure .

C -> A: Constant-pressure process back to its initial state

a) Draw a Pressure volume diagram for the cycle. You don't need to put numbers on your axes but the shape of your diagram must strongly resemble the process described. Indicate clearly points A, B and C , and show the direction of each process.

b) Is this a heat engine or a heat pump?

c) What is the temperature at point A?

d) What is the temperature at point B?

e) What is the change in internal energy in process A -> B?

f) How much work is done on the system in process B -> C?

g) How much heat is added in process A -> B?

h) How much heat is added in process B -> C?

Answer 1

,