Here's the breakdown of the solute and solvent in a potassium nitrate solution:

* Solute: Potassium nitrate (KNO₃)

* Solvent: Water (H₂O)

Explanation:

* Solute: This is the substance that dissolves in the solvent. In this case, potassium nitrate is the solid that dissolves in the water.

* Solvent: This is the substance that dissolves the solute. Water is a very common solvent, and in this case, it's what the potassium nitrate dissolves into.

Key Point: The solute is typically present in a smaller amount than the solvent.