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
Correct Answer: The chemical potential of each component should be same in the two phases
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.