Solution: A solution is a homogeneous mixture of two or more components in which the particle size is smaller than.
Solutions are classified as follows :
Based on the type of solvent:
- Aqueous solution: The solution in which water acts as a solvent, is called an aqueous solution. For example, sugar solution.
- Non-aqueous solution: The solution in which any liquid other than water acts as a solvent is called a non-aqueous solution. For example, the solution of sulfur in carbon disulfide (CS2), benzene, ether, etc
Based on the amount of solute in the given solution:
- Unsaturated solution: A solution in which the solute is in a lesser amount in comparison with the solvent is called an unsaturated solution. For example, sugar in a cup of hot coffee produces an unsaturated sugar solution.
- Saturated solution: A solution in which no more solute can be dissolved in a definite amount of solvent at a given temperature is called a saturated solution.
- Supersaturated solution: A solution that has more solute at a given temperature than that of the saturated solution is called a supersaturated solution. For example, carbonated water contains more carbon dioxide dissolved in water.
Based on the physical state of solute and solvent:
On the basis of the physical states of the constituents (solute and solvent), a solution can be of the following six types namely:
- Solid in Solid: Solid solute and Solvent in the solid-state.
- Solid in Liquid Solute: Solid Solvent and Liquid solute.
- Liquid in Solid: Liquid solute and a liquid solvent.
- Liquid in Liquid: Solute in liquid and solvent in liquid.
- Gas in Liquid: Solute in gas and solvent in liquid.
- Gas in Gas: Solute in gas and solvent in gas.