   Chapter 12.5, Problem 12.4QQ

Chapter
Section
Textbook Problem

Which of the following is true for the entropy change of a system that undergoes a reversible, adiabatic process? (a) ΔS < 0 (b) ΔS = 0 (c) ΔS > 0

(a)

To determine

To say True or False: The entropy change of a system that undergoes a reversible, adiabatic process ΔS<0 .

Explanation

Entropy is a state variable related to second law of thermodynamics. In a reversible process, the constant temperature between two equilibrium states the change in entropy as,

ΔS=QT

• Q is the energy absorbed or repelled

(b)

To determine

To say True or False: The entropy change of a system that undergoes a reversible, adiabatic process ΔS=0 .

(c)

To determine

To say True or False: The entropy change of a system that undergoes a reversible, adiabatic process ΔS>0 .

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