Under what condition can entropy decrease in a system?
Condition that decrease entropy in a system.
Explanation of Solution
Introduction:
According to the second law of thermodynamics, the total entropy of an isolated system remains constant.
Every system remains in equilibrium. When equilibrium disturbed, then energy is released and the system goes in the state of disturbance that is entropy of the system increases. Now, to decrease the entropy of a system, external work must be done on the system to remove the excessive heat of the system. Thus, not only entropy of the system decreases but also, the system reaches towards an equilibrium state.
Conclusion:
Thus, by doing external work on the system, the entropy of the system can be decreased.
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