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10 mol of an ideal gas with Cy = 20.8 J/mol · K at T, = 300 K and p. = 0.3 MPa occupy the left half of an insulated vessel, as shown in Fig. A. The other half is evacuated. At time t = 0, a 1 kW electrical heating element is turned on. After 30 seconds, the partition dividing the vessel ruptures and the heating element is turned off. Calculate : (a) The final temperature and pressure of the gas in the vessel. (b) The entropy change of the gas during this process.

10 mol of an ideal gas with Cy = 20.8 J/mol · K at T, = 300 K and p. = 0.3 MPa occupy the left half of an insulated vessel, as shown in Fig. A. The other half is evacuated. At time t = 0, a 1 kW electrical heating element is turned on. After 30 seconds, the partition dividing the vessel ruptures and the heating element is turned off. Calculate : (a) The final temperature and pressure of the gas in the vessel. (b) The entropy change of the gas during this process.

Introduction to Chemical Engineering Thermodynamics
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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10 mol of an ideal gas with Cy = 20.8 J/mol · K at T, = 300 K and p. = 0.3 MPa occupy the left half of an insulated vessel, as shown in Fig. A. The other half is evacuated. At time t = 0, a 1 kW electrical heating element is turned on. After 30 seconds, the partition dividing the vessel ruptures and the heating element is turned off. Calculate : (a) The final temperature and pressure of the gas in the vessel. (b) The entropy change of the gas during this process.
Transcribed Image Text:10 mol of an ideal gas with Cy = 20.8 J/mol · K at T, = 300 K and p. = 0.3 MPa occupy the left half of an insulated vessel, as shown in Fig. A. The other half is evacuated. At time t = 0, a 1 kW electrical heating element is turned on. After 30 seconds, the partition dividing the vessel ruptures and the heating element is turned off. Calculate : (a) The final temperature and pressure of the gas in the vessel. (b) The entropy change of the gas during this process.
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