Entropy change of an irreversible process

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SUMMARY

In classical thermodynamics, the entropy change for an irreversible process in a closed system is always greater than zero, while for a reversible process, the entropy change is zero. This fundamental principle highlights the inherent increase in disorder associated with irreversible processes. The discussion clarifies a common misconception regarding entropy changes, emphasizing the importance of understanding these thermodynamic concepts accurately.

PREREQUISITES
  • Classical thermodynamics principles
  • Understanding of entropy and its implications
  • Knowledge of reversible and irreversible processes
  • Familiarity with closed system dynamics
NEXT STEPS
  • Study the laws of thermodynamics in detail
  • Explore the concept of entropy in statistical mechanics
  • Investigate examples of reversible and irreversible processes
  • Learn about the implications of entropy in real-world systems
USEFUL FOR

Students of physics, engineers in thermodynamics, and anyone interested in the principles governing energy and entropy in closed systems.

supermesh
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Can entropy change be zero for a closed system in an irreversible process? If yes under what conditions? Thanks!
 
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As far as classical thermodynamics is concerned, the entropy change will always be zero for an irreversible process in a closed system.
 
I am shocked!

While browsing through some old posts, I stumbled upon this, and I got a terrible shock. :eek: I had made a typo and nobody had commented on it. My apologies to the OP. What I had meant to write was:

As far as classical thermodynamics is concerned, the entropy change will always be greater than zero for an irreversible process in a closed system, and zero for a reversible process in a closed system.
 

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