A monatomic ideal gas is initially confined in a 0.1 m3 chamber at T = 300 K and P = 0.1 MPa. A second chamber, which has a volume of 0.05 m3, is connected to the first by a valve, and is initially evacuated. The valve is opened and gas flows from the first chamber into the second until the two chambers are in equilibrium. Both chambers and the valve are adiabatic. How much entropy is generated by this process?
A. 3.37 J/mol•K
B. 6.74 J/K
C. 13.5 J/K
D. 12.7 kJ
E. Insufficient information to solve
A. Incorrect. This is a molar entropy. Multiply it by the number of moles of gas in the system to convert it to entropy.
B. Incorrect. You likely made a transcription error in Equation 4.56 or 4.59.
C. Correct. Using Equation 4.56 and the Ideal Gas Law, you arrive at the proper value.
D. Incorrect. This is a heat, work or other energy value. Entropy has different units.
E. Incorrect. There is sufficient information provided to solve the problem.
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