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B) 2nd Law of Thermodynamics: For a closed system the total entropy increases for an irreversible process or stays constant for a reversible process. This is known as the 2nd Law of Thermodynamics: AS total ≥ 0. 1) Imagine two reservoirs (large systems so that their temperature stays constant) at different temperatures exchanging heat. Draw two separate T-S diagrams, one for the high temperature and one for the low temperature reservoir. Decide whether entropy should be increasing or decreasing for each reservoir, and depict this on each diagram. 2) Which quantity should be the same for each reservoir? Why? 3) Based on your answer in 2) make appropriate adjustments to your T-S diagrams. Which reservoir has a larger change in entropy (in terms of magnitude of AS)? 4) If the two reservoirs constituted a closed system, is the total entropy increasing or decreasing? Does this agree with the 2nd Law of Thermodynamics?

B) 2nd Law of Thermodynamics: For a closed system the total entropy increases for an irreversible process or stays constant for a reversible process. This is known as the 2nd Law of Thermodynamics: AS total ≥ 0. 1) Imagine two reservoirs (large systems so that their temperature stays constant) at different temperatures exchanging heat. Draw two separate T-S diagrams, one for the high temperature and one for the low temperature reservoir. Decide whether entropy should be increasing or decreasing for each reservoir, and depict this on each diagram. 2) Which quantity should be the same for each reservoir? Why? 3) Based on your answer in 2) make appropriate adjustments to your T-S diagrams. Which reservoir has a larger change in entropy (in terms of magnitude of AS)? 4) If the two reservoirs constituted a closed system, is the total entropy increasing or decreasing? Does this agree with the 2nd Law of Thermodynamics?

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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B) 2nd Law of Thermodynamics: For a closed system the total entropy increases for an irreversible process or stays constant for a reversible process. This is known as the 2nd Law of Thermodynamics: 4Stotal ≥ 0. 1) Imagine two reservoirs (large systems so that their temperature stays constant) at different temperatures exchanging heat. Draw two separate T-S diagrams, one for the high temperature and one for the low temperature reservoir. Decide whether entropy should be increasing or decreasing for each reservoir, and depict this on each diagram. 2) Which quantity should be the same for each reservoir? Why? 3) Based on your answer in 2) make appropriate adjustments to your T-S diagrams. Which reservoir has a larger change in entropy (in terms of magnitude of AS)? 4) If the two reservoirs constituted a closed system, is the total entropy increasing or decreasing? Does this agree with the 2nd Law of Thermodynamics?
Transcribed Image Text:B) 2nd Law of Thermodynamics: For a closed system the total entropy increases for an irreversible process or stays constant for a reversible process. This is known as the 2nd Law of Thermodynamics: 4Stotal ≥ 0. 1) Imagine two reservoirs (large systems so that their temperature stays constant) at different temperatures exchanging heat. Draw two separate T-S diagrams, one for the high temperature and one for the low temperature reservoir. Decide whether entropy should be increasing or decreasing for each reservoir, and depict this on each diagram. 2) Which quantity should be the same for each reservoir? Why? 3) Based on your answer in 2) make appropriate adjustments to your T-S diagrams. Which reservoir has a larger change in entropy (in terms of magnitude of AS)? 4) If the two reservoirs constituted a closed system, is the total entropy increasing or decreasing? Does this agree with the 2nd Law of Thermodynamics?
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