7: Purification of Molecular Compounds
- Page ID
- 189795
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- 7.4: Sublimation
- Sublimation is conceptually similar to distillation. It is a method in which an impure sample is heated and a purer sample collects someplace cooler nearby. Instead of relying on an equilibrium between the liquid phase and the gas phase, sublimation involves an equilibrium between the solid phase and the gas phase.
- 7.6: Solvent Partitioning (Liquid-Liquid Extraction)
- This method is often called "extraction". Extraction means drawing a compound out of a mixture using a solvent. Solvent partitioning is more specific. It means compounds have a "choice" of two solvents that they can dissolve in. Some compounds dissolve in one solvent. Some compounds dissolve in the other solvent. That way the compounds in the mixture become separated into two groups.