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Air is compressed in a piston–cylinder device from 90 kPa and 20C to 400 kPa in a reversible isothermal process. Determine (a) the entropy change of air and (b) the work done.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 38P

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Question

Air is compressed in a piston–cylinder device from
90 kPa and 20C to 400 kPa in a reversible isothermal
process. Determine (a) the entropy change of air and (b) the
work done.

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