Both of these factors are basically the same. To dissolve/miscible, you need solvent particles near solute particles. The solute particles in the middle of a non stirred solute and in the middle of a unpulverized solute can not interact with a solvent particles. Therefore, they can not dissolve. So separating the solute particles will increase the number of solute and solvent particles that can interact thereby increase the number of solute that can dissolve in a given time (i.e. increase rate of dissolving). |
Both of these factors are basically the same. To dissolve/miscible, you need solvent particles near solute particles. The solute particles in the middle of a non stirred solute and in the middle of an unpulverized solute can not interact with a solvent particles. Therefore, they can not dissolve. So separating the solute particles will increase the number of solute and solvent particles that can interact thereby increase the number of solute that can dissolve in a given time (i.e. increase rate of dissolving). |
As you approach the solubility of the solution at a given temperature, there are less and less empty space (or another way of saying it is there are less and less what solvent particles that are not part of a hydrated ion/molecules) so solute particles "take longer" to find empty space (or water particles to interact with). So the higher the concentration of the solution (thereby closer to concentration of the saturated solution), the rate of the dissolving decreases. |
As you approach the solubility of the solution at a given temperature, there are less and less empty space (or another way of saying it is there are less and less solvent particles that are not part of a hydrated ion/molecules) so solute particles "take longer" to find empty space (or water particles to interact with). So the higher the concentration of the solution (thereby closer to concentration of the saturated solution), the rate of the dissolving decreases. |