Question

why crystallisation technique is considered better than and simple simple evaporation technique

Answer 1

crystallisation is consider better than evaporation because
1) In crystallisation ,only pure substance is obtained.
2) Crystallisation removes all the impurities, while evaporation can't remove the finest particle (of impurity).

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.