Question

short note on
2.Chromatography​

Answer 1

Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a system on which is fixed a material called the stationary phase.

Answer 2

$\huge\bold\color{red}{\boxed{\boxed{☆Answer☆}}}$

Chromatography

Chromatography is a physical method of separation that distributes components to separate between two phases, one stationary (stationary phase), the other (the mobile phase) moving in a definite direction.

• It is a technique used to separate mixtures in to their components, purify. Compounds which can be solid or liquid and also test the purity of compounds.

• In this technique the mixture of substances are applied on to a stationary phase .

• Then a pure solvent or a mixture of solvents is allowed to move slowly over stationary phase .The components of mixture gets gradually separated from one another .The moving phase is mobile phase .

___________________________

Additional information:-

The chromatography is classified into two categories:

• Adsorption chromatography
• Partition chromatography

Adsorption chromatography:

• It is based on the facts that different compounds are adsorbed on adsorbent at different degrees.

• The commonly used adsorbents are silica gel and alumina.

• When a mobile phase is allowed to move over a stationary phase the components of mixture move by varying distances over a stationary phase.