Question

thermodynamic properties shows a discontinuity during a second-order phase transition

Answer 1

First-order phase transitions exhibit a discontinuity in the first derivative of the free energy with respect to some thermodynamic variable. ... For instance, in the ferromagnetic transition, the heat capacity diverges to infinity. The same phenomenon is also seen in superconducting phase transition.
Sublimation (phase transition)
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Answer 2

Answer:

Heat Capacity

Explanation: