Oxygen is compressed from an initial condition of 1 bar and 250C to a final state of 5 bar and 250C by an adiabatic compression followed by cooling at constant volume. Air may be considered an ideal gas with the constant heat capacities. Where Cv = 20.785 J/mol K or (5/2) R, Cp = 29.099 J/mol.K or (7/2) R , R = 8.314 J/mol K. Calculate the (i) work required (W) (ii) heat transferred (Q) (iii) changes in internal energy (∆U)
Oxygen is compressed from an initial condition of 1 bar and 250C to a final state of 5 bar and 250C by an adiabatic compression followed by cooling at constant volume. Air may be considered an ideal gas with the constant heat capacities. Where Cv = 20.785 J/mol K or (5/2) R, Cp = 29.099 J/mol.K or (7/2) R , R = 8.314 J/mol K. Calculate the (i) work required (W) (ii) heat transferred (Q) (iii) changes in internal energy (∆U)
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
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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a)Oxygen is compressed from an initial condition of 1 bar and 250C to a final state of 5 bar and 250C by an adiabatic compression followed by cooling at constant volume. Air may be considered an ideal gas with the constant heat capacities. Where Cv = 20.785 J/mol K or (5/2) R, Cp = 29.099 J/mol.K or (7/2) R , R = 8.314 J/mol K. Calculate the
(i) work required (W)
(ii) heat transferred (Q)
(iii) changes in internal energy (∆U)
(iv) enthalpy of air (∆H) for each process.
Air may be considered an ideal gas with the constant heat capacities.
- b) Sketch the entire process in a single PV diagram for Q3 (a)
- c) Write any two consequences of the application of the second law of
thermodynamics with suitable examples.
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