Crystallization is a technique used to separate mixtures where a solid is dissolved in a liquid, specifically solid-liquid mixtures. It separates a soluble solid from a solution by evaporating the solvent, causing the solid to form pure crystals as its solubility decreases with cooling or evaporation
. Key points:
- Crystallization separates a dissolved solid from a liquid solution, forming pure solid crystals
- It is used for mixtures where one component is soluble in a solvent and others are impurities or less soluble substances
- The process involves heating the solution to evaporate some solvent, then cooling to allow crystals to form
- It is especially useful when the solid is more soluble in hot solvent than in cold solvent
- Examples include separating salt from saltwater solution or copper sulfate crystals from their solution
In summary, crystallization separates solid-liquid mixtures where the solid is dissolved in the liquid, enabling recovery of the solid in pure crystalline form by exploiting differences in solubility
