Consider a pistoncylinder assembly that contains 2.5 L of an ideal gas at 30C and 8 bar.
Question:
Consider a piston–cylinder assembly that contains 2.5 L of an ideal gas at 30ºC and 8 bar.
The gas reversibly expands to 5 bar.
(a) Write an energy balance for this process (you may neglect changes in potential and kinetic energy).
(b) Suppose that the process is done isothermally. What is the change in internal energy, ΔU, for the process? What is the work done, W, during the process? What is the heat transferred, Q?
(c) If the process is done adiabatically (instead of isothermally), will the fi nal temperature be greater than, equal to, or less than 30ºC? Explain.
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a Energy Balance Since the problem statement mentions neglecting changes in potential and kinetic energies we only focus on the work done and heat tra...View the full answer
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