For all irreversible process, the entropy of the system:
Correct answer: D. increase
- A. decreases
- B. remains constant
- C. is zero
- D. increase
Explanation
The second law of thermodynamics says the entropy of an isolated system increases in every irreversible process. Entropy stays constant only in a reversible process, which is an idealisation that no real process achieves.
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About Thermodynamics
Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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