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Separation technique used with evaporation to collect a dissolved solid from a liquid, forming crystals

Question

Separation technique used with evaporation to collect a dissolved solid from a liquid, forming crystals

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Solution

The separation technique used with evaporation to collect a dissolved solid from a liquid, forming crystals is called Crystallization. Here are the steps:

  1. Preparation: Prepare a saturated solution that contains the desired product. This is usually done by dissolving the solid in a suitable solvent and then heating the solution until no more solid can dissolve.

  2. Cooling: Allow the solution to cool. As it cools, the solubility of the solid in the solvent decreases, and the solid begins to come out of solution.

  3. Formation of Crystals: The solid forms crystals, which can then be collected by filtration.

  4. Drying: The crystals are then dried to remove any remaining solvent, yielding the purified solid.

This technique is often used in chemistry for purification and also in cooking for sugar and salt production.

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Name the technique used to separate a soluble solid from a solution.

Name the technique used to separate a solid from a liquid.

Crystallisation separates a solid (the solute) from a liquid (the solvent).

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