explain what you understand by the entropy of substance? show that for any reversible cyclic change of a system the total change of entropy is zero.
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Answer:
in short entropy is the disturbance created in any system
Explanation:
Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work
The entropy change of the system (device) for a cyclic process is always zero whether it is a reversible or an irreversible one, because entropy is a property (point function). Also, for any reversible process, the entropy change of the universe is zero.
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