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Solved: The free expansion of an ideal gas is an adiabatic
Chapter 20, Problem 18DQ(choose chapter or problem)
Problem 18DQ
The free expansion of a gas is an adiabatic process and so no heat is transferred. No work is done, so the internal energy does not change. Thus, \(Q / T=0\), yet the disorder of the system and thus its entropy have increased after the expansion. Why does Eq. (20.19) not apply to this situation?
Equation Transcription:
Text Transcription:
Q/T=0
Questions & Answers
QUESTION:
Problem 18DQ
The free expansion of a gas is an adiabatic process and so no heat is transferred. No work is done, so the internal energy does not change. Thus, \(Q / T=0\), yet the disorder of the system and thus its entropy have increased after the expansion. Why does Eq. (20.19) not apply to this situation?
Equation Transcription:
Text Transcription:
Q/T=0
ANSWER:
Solution 18DQ
Step 1:
An adiabatic process in which there is no heat transfer takes place
An adiabatic process for an ideal gas , as the gas expands from volume a positive work is done