Question

Which of the following is not correct for the first order phase transition?

• A. There is a change in entropy during phase transition
• B. Volume changes during phase transition
• C. Gibbs function changes discontinuously at phase transition temperature
• D. First order derivatives of Gibb’s function change discontinuously at phase transition temperature

Hint:

For first-order transitions, the first derivative of \( G \) (entropy, volume) is discontinuous, but \( G \) itself is continuous.

Answer 1

The Correct Option is C

In a first-order phase transition, properties such as entropy and volume change discontinuously, but the Gibbs free energy remains continuous.