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Question

At equilibrium, the entropy change is

A
0
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B
+ve
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C
-ve
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D
none
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Solution

The correct option is A 0
For a reversible process, entropy behaves as a conserved quantity and no change occurs in total entropy. More specifically, total entropy is conserved in a reversible process and not conserved in an irreversible process.
At eqm as system will be reversible so total change in entropy will be zero.

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