A pistoncylinder device initially contains 0.50 m3 of an ideal gas at 150 kPa and 20C. The
Question:
A piston–cylinder device initially contains 0.50 m3 of an ideal gas at 150 kPa and 20ºC. The gas is subjected to a constant external pressure of 400 kPa and compressed in an isothermal process. Assume the surroundings are at 20ºC. Take cP = 25R and assume the ideal gas model holds.
(a) Determine the heat transfer (in kJ) during the process.
(b) What is the entropy change of the system, surroundings, and universe?
(c) Is the process reversible, irreversible, or impossible?
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a To determine the heat transfer during the process we can apply the first law The change ...View the full answer
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