THE STABILITY OF SOLUTE CRYSTALLIZATION EQUILIBRIUM

Solute crystallization equilibrium contains a stable equilibrium and an unstable equilibrium. The system must get across an energy peak of unstable equilibrium first, and then get into an energy valley of stable equilibrium during the solute crystallization. When solution is diluted, the energy peak becomes high, and the energy valley becomes shallow, the solute crystallization becomes difficult and the dissolution of the crystallized product becomes easy; when solution is diluted to a certain extent, the energy peak and the energy valley combine into one, and crystallization of the solute becomes impossible.