what happens when a small particle of solute is added to a supersaturated solution. explain

When a small particle of solute is added to a supersaturated solution, the following steps occur:

1. Introduction of Solute: The small particle of solute is introduced into the supersaturated solution. A supersaturated solution is a solution that contains more dissolved solute than could usually dissolve under normal conditions. It is unstable and is achieved under specific conditions such as increased temperature or pressure.

2. Disturbance of Equilibrium: The addition of the solute particle disturbs the equilibrium of the supersaturated solution. This is because the solution was initially at a state where it could not dissolve any more solute.

3. Nucleation: The added solute particle acts as a nucleus or a seed for crystallization. This is a process called nucleation.

4. Crystallization: Once the solute particle is introduced, the excess solute in the supersaturated solution starts to crystallize around this particle. This is because the solution is trying to return to a state of saturation, where the amount of solute in the solution is in equilibrium with the solute that can be dissolved.

5. Precipitation: As more and more solute particles crystallize around the introduced solute particle, they eventually become too heavy to remain dissolved in the solution and precipitate out. This process continues until the solution is no longer supersaturated.

In summary, the addition of a small particle of solute to a supersaturated solution triggers crystallization and precipitation of the excess solute until the solution returns to a state of saturation.