Question

What is crystallisation?List two ways in which crystallisation is better than evaporation technique.

Answer 1

Answer:

Crystallisation is a separation technique that is used to separate a solid that has dissolved in a liquid and made a solution

Explanation:

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Answer 2

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Crystallization is the process used by chemists for the purification of solid substances. It is the process of formation of solid crystals precipitating from a homogeneous solution.

 Crystallization refers to the process of precipitating out the pure substance or compound from its solution or from an impure mixture by adding suitable solvent to it.

For e.g. water forms ice crystal.

 

Crystallization is better than simple evaporation technique to obtain crystals is because in evaporation, we allow the solution to heat to make the solvent evaporate but this may degrade the solute into some another compound. the other reason could be that in crystallization, the crystals appear from the supersaturated solution itself when cooled or any technique like that which occurs naturally so the crystals will be pure in itself.