The necessary and sufficient condition for equilibrium between two phases is

A. The concentration of each component should be same in the two phases

B. The temperature of each phase should be same

C. The pressure should be same in the two phases

D. The chemical potential of each component should be same in the two phases

Answer: Option D

Solution(By Examveda Team)

The necessary and sufficient condition for a system containing different phases and different constituents to be in internal equilibrium is pressure and temperature of each and every phase should be same and chemical potential of constituent in a phase should be same in all the other phases.