Answer:
Solute-solvent interaction increases after dissolution. Solute-solvent interaction is greater after dissolution.
Explanation:
When a substance is dissolved, the interaction between solute particles gives way to new stronger interaction with the solvent which makes the solid disappear and form a continuous homogeneous phase with the solvent. When this occurs, the solute has dissolved in the solvent.
For the dissolution of the solute particles in the solvent particles, the force of attraction between the particles of solute and between the particle of solvent must be less than the interaction between the solute particles and solvent particles after dissolution.
In a solution, the forces act are present between the solute molecules, solvent molecules, and solute-solvent molecules. For the dissociation to occur the bond between the solute and solvent particles has to be broken. The resultant will result in the dissolution of the solute in the solvent mixture. The strong solute-solute and solvent-solvent bond will result in difficulty in the formation of the solute-solvent bond, and the dissolution will not take place.
Thus for the dissolution of the solute particles in the solvent particles, the force of attraction between the particles of solute and solvent must be less than the interaction between the solute particles and solvent particles after dissolution.
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