When a solution is made, the entropy of the system increases. This is because the solute particles are dispersed throughout the solvent, which creates a more disordered state. The entropy of a system is a measure of its disorder, so the more disordered a system is, the higher its entropy.

The increase in entropy when a solution is made is due to the fact that the solute particles are no longer confined to a single phase. In a pure solvent, the solvent molecules are all in the same phase and are therefore arranged in a relatively orderly manner. When a solute is added, the solute particles disrupt this order and create a more disordered state.

The increase in entropy when a solution is made is also due to the fact that the solute particles interact with the solvent molecules. These interactions can cause the solvent molecules to move around more freely, which also contributes to the disorder of the system.

The increase in entropy when a solution is made is a positive change, as it indicates that the system is becoming more disordered. This is a desirable outcome, as it means that the system is becoming more stable.