____________ does not change during phase transformation processes like sublimation, melting & vaporisation?
Correct answer: A. Gibbs free energy
- A. Gibbs free energy
- B. Entropy
- C. Internal energy
- D. All (A), B. & (C)
Explanation
At the phase-transition temperature and pressure, the two phases have equal chemical potential, so the Gibbs free energy does not change during the equilibrium transformation. Entropy and internal energy do change because latent heat is involved.
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