Air (1.0 bar, 298.15 K) is being compressed into 5.0 bar, 298.15 K by two reversible, mechanical processes: (a) Constant pressure compression followed by heating at constant volume (b) heating at fixed volumed followed by cooling at cocnstant pressure. Calculate heat, work, change of U, change of H of each process.  Assume that air is an ideal gas with Cp = 28.10 J mol-1K-1 and molar volume of 0.02497 m3mol-1 (298.15 K, 1.0 bar)

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Air (1.0 bar, 298.15 K) is being compressed into 5.0 bar, 298.15 K by two reversible, mechanical processes:

(a) Constant pressure compression followed by heating at constant volume

(b) heating at fixed volumed followed by cooling at cocnstant pressure.

Calculate heat, work, change of U, change of H of each process. 

Assume that air is an ideal gas with Cp = 28.10 J mol-1K-1 and molar volume of 0.02497 m3mol-1 (298.15 K, 1.0 bar)

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