Chemical Engineering Thermodynamics

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is_____.

  • A. < 0
  • B. > 0
  • C. = 0
  • D. None of these
Answer: Option A.
Explanation: 

For a spontaneous process of a system the change in entropy should be always greater than zero and for an equilibrium (more or less reversible) process the entropy must be equal to zero

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