Two phases ? and ? are in equilibrium, and they are made of A-type and B-type atoms. Which of the following statements is true?
(a) The Gibbs free energies of the ? and ? phases are equal.
(b) The chemical potentials of the A-type atoms in the ? and ? phases are equal.
(c) The Gibbs free energies of the ? and ? phases are equal to 0.
(d) The chemical potentials of the A-type and B-type atoms in the ?-phase are equal.
(b) The chemical potentials of the A-type atoms in the ? and ? phases are equal.
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