Problem 4. A piston- cylinder device initially contains 0.5 m' of an ideal gas at 150 kPa and 20°C. 125,000 J of work is done on the system to compress the gas isothermally and irreversibly to a...

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Book: Introduction to Chemical Engineering Thermodynamics 8 edition, 2018 (Smith, J.M., Van Ness, H.C., Abbot, M.M., Swihart.)

Extracted text: Problem 4. A piston- cylinder device initially contains 0.5 m' of an ideal gas at 150 kPa and 20°C. 125,000 J of work is done on the system to compress the gas isothermally and irreversibly to a pressure of 400 kPa. Assume the surroundings are at a constant temperature of 20 °C and the ideal gas has a Cp, of 5R/2. a) What is the heat transfer (kJ)? b) What is the entropy generation as a result of this process?