Question

explain process of crystallization​

Answer 1

Answer:

What is the process of crystallization?

Crystallization can be defined as the process through which the atoms/molecules of a substance arrange themselves in a well-defined three-dimensional lattice and consequently, minimize the overall energy of the system. Crystallization is a technique used for the purification of substances. A separation technique to separate solids from a solution.

Purification by crystallization

The crystallisation method can be used for the purification of those mixtures which

i. Contains insoluble and/or soluble impurities.

ii. Have crystalline nature.

iii. Cannot be separated by filtration as some impurities are soluble.

By the technique of crystallization, pure solids are separated from impurities. For example, salt obtained from the sea is separated from impurities; crystals of alum (Phitkari) are separated from impure samples.

Answer 2

Crystallization is turning back of saturated solution into crystals.

• First, the solution is heated in an open container and the solvent particles will start evaporating leaving behind the solute particles.
• When the solution cools naturally, the particles will start accumulating on the surface.
• Then the crystals are collected and dried further as usage.
• The smaller crystals may appear in the starting and the larger particles will start appearing afterwards.