Distillation: Distillation is a method of purification that involves the separation of a mixture based on its physical properties. It is commonly used to is...
Distillation:
Distillation is a method of purification that involves the separation of a mixture based on its physical properties. It is commonly used to isolate pure substances from mixtures of unknown composition. Distillation involves the controlled evaporation of a liquid, causing the solute to rise to the top of a flask. The pure solvent then condenses at the top, leaving the impurities behind. This process can be repeated multiple times to achieve a high degree of purity.
Sublimation:
Sublimation is a phase transition in which a solid directly changes into a gas without passing through the liquid phase. It is typically observed when a solid is heated to a high temperature. Sublimation is used in purification when a solid is insoluble in a liquid, or when the solid has a low solubility in a solvent. The pure gas then condenses into a pure vapor.
Chromatography:
Chromatography is a method of purification that involves the separation of a mixture of substances based on their different physical and chemical properties. It is commonly used in chemical laboratories and industries to isolate pure chemicals and to identify compounds. Chromatography involves the separation of a mixture on a solid support, such as a silica gel or alumina. The different components of the mixture interact with the support in different ways, causing them to migrate at different rates. The separated components can then be detected and identified by their different retention times