Medical College Admission Test (MCAT) General Chemistry Practice Exam

The formation of a solution involves a series of steps that account for the interactions between solute and solvent molecules and the breaking and forming of intermolecular bonds. Specifically, there are three main steps in the solution formation process:

1. **Separation of Solute Molecules**: For a solute to dissolve, the individual solute molecules or ions must be separated from one another. This step requires energy input to overcome the intermolecular forces holding the solute particles together.

2. **Separation of Solvent Molecules**: Similarly, the solvent molecules must also be separated to create space for the solute particles. This also requires energy, as intermolecular forces between the solvent molecules need to be overcome to allow the solute to fit in.

3. **Formation of Solute-Solvent Interactions**: In this final step, the separated solute molecules or ions interact with the solvent molecules, forming new intermolecular bonds between them. This process can be exothermic if the interactions between solute and solvent are strong, releasing energy.

The understanding of these steps is crucial, as it highlights the balance between the energy needed to separate molecules and the energy released when new interactions are formed. The overall process will only occur if the