The change in entropy in adiabatic process

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In an adiabatic process, the change in entropy depends on whether the process is reversible or irreversible. For reversible adiabatic processes, entropy remains constant, indicating no change in disorder. Conversely, in irreversible adiabatic processes, entropy increases, reflecting a rise in disorder within the system. This distinction is crucial for understanding the behavior of gases and thermodynamic systems. Clarifying these concepts helps resolve confusion about entropy in adiabatic processes.
huyhohoang
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Hello everyone, I still wonder if there's a change in entropy in adiabatic process. The definition of entropy is a quantity represents for the disorder state of a system. Arccording to kinetic theory of gas, temperature is for the state of chaotic motion of molecules. So I'm very confuse, can someone explain for me without using the entropy equation ΔS=∫dQ/T ?
Thanks a lot!
 
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huyhohoang said:
Hello everyone, I still wonder if there's a change in entropy in adiabatic process. The definition of entropy is a quantity represents for the disorder state of a system. Arccording to kinetic theory of gas, temperature is for the state of chaotic motion of molecules. So I'm very confuse, can someone explain for me without using the entropy equation ΔS=∫dQ/T ?
Thanks a lot!
If the adiabatic process is reversible, then the entropy doesn't change. If the adiabatic process is irreversible, the entropy increases. There, I didn't use the equation.

Chet
 

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