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For a given undercooling there is a certain radius r*, which is associated with a maximum excess free energy. If r< r* the system can lower its free energy by_____

For a given undercooling there is a certain radius r*, which is associated with a maximum excess free energy. If r< r* the system can lower its free energy by_____ Correct Answer Dissolution of solid

Actually, the interface term is directly proportional to r2 and the volume free energy is directly proportional to r3 and hence the creation of small particles of solid always leads to a free energy increase. It is this increase that is able to maintain the liquid phase in a metastable state almost indefinitely at temperatures below Tm. If r< r* the system can lower its free energy by dissolution of solid.

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