Which separation technique is most commonly used to separate a solute from its solvent in a solution?

• A. Chromatography
• B. Filtration
• C. Distillation
• D. Floatation

Answer: (C)

Verified step by step guidance

1. Understand the goal: We want to separate a solute from its solvent in a solution, which means isolating the dissolved substance from the liquid it is dissolved in.
2. Review each technique's principle: Chromatography separates components based on their movement through a medium; Filtration separates solids from liquids based on particle size; Floatation separates substances based on their ability to float; Distillation separates substances based on differences in boiling points.
3. Identify the nature of the solution: Since the solute is dissolved in the solvent, it forms a homogeneous mixture, so physical separation methods like filtration or floatation won't work effectively.
4. Focus on distillation: This technique involves heating the solution to boil off the solvent (which has a lower boiling point), then condensing the vapor back into liquid, leaving the solute behind.
5. Conclude that distillation is the most common and effective method to separate a solute from its solvent in a solution due to the difference in boiling points.