In the grand canonical ensemble, which of the following statements is true about the behavior of the system as the chemical potential is varied?
1
The system undergoes a phase transition from a solid to a liquid phase.
2
The system undergoes a phase transition from a liquid to a solid phase.
3
The number of particles in the system increases as the chemical potential is increased.
4
The number of particles in the system decreases as the chemical potential is increased.