Question

Why is crystallization better than evaporation give two reason?

Answer 1

Crystallization is better than evaporation because during Evaporation:1) Some solids decompose or some, like sugar may get charred on heating to dryness.2) Some impurities may remain dissolved in the solution even after filtration, which on evaporation contaminates the solid.

Answer 2

Why crystalization is better than evaporation?

1. It occurs on the entire surface.
2. we get solid in the pure crystallized form.
3. The soluble impurities get removed in this process.
4. It doesn't require very high temperature conditions.