The entropy of the surroundings remains constant during an adiabatic change even if the change is irreversible.

Question

Quizplus · Accepted Answer

The entropy of the surroundings remains constant during an adiabatic change because the heat cannot flow in or out of the system, and thus the surroundings do not change. This remains true even if the adiabatic change is irreversible because the entropy of the system can still decrease, causing an increase in entropy in the surroundings to compensate and maintain the overall constant entropy of the universe.

The Entropy of the Surroundings Remains Constant During an Adiabatic