Question

why is crystallisation better than simple evaporation

Answer 1

Crystallisation is better than simple evaporation because, in simple evaporation, the water molecules remains in the mulecules of the substance but in rystallisation we can get the pure form of the substance and water separately. And also the process of crystallisation is faster than the process of evaporation.

Answer 2

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Answer

Crystallisation is a process that separates a pure solid in the form of its crystals from a solution.

Crystallisation is better than evaporation because during Evaporation

• Some solids decompose or some, like sugar may get charred on heating to dryness.

• Some impurities may remain dissolved in the solution even after filtration which on evaporation contaminates the solid.