Question

Why is entropy not zero for irreversible adiabatic expansion

Answer 1

Answer:

A classic example of an irreversible process causing entropy change not involving heat transfer is the free adiabatic expansion of an ideal gas. ... Since the chamber is insulated, there is no heat transfer (Q=0). Since the expansion of the gas does not expand the boundaries of the chamber, there is no boundary work (W=0).

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Answer 2

Explanation:

a classic example of an Irreversible process causing entropy change not involving heat transfer is the free expansion of an ideal gas is the Chamber is insulated there is no heat transfer is the expansion of gas does not explain the boundaries of the chamber there is no boundary work