Question Statement
According to Ehrenfest's classification, a second-order phase transition exhibits:
(A)
Zero latent heat and a jump discontinuity in heat capacity $C_p$
(B)
Non-zero latent heat and volume discontinuity
(C)
Discontinuity in Gibbs free energy itself
(D)
Infinite pressure
Step-by-Step KaTeX Derivation & Detailed Explanation
### Solution: Second-order transitions have continuous first derivatives ($S, V$) and discontinuous second derivatives ($C_p, \kappa$).