Question

Define chromatography.

Answer 1

1. Definition of chromatography: It is a method based on the difference in the rate of adsorption of various components of a mixture on a suitable adsorbent.
2. Adsorption is the process of the accumulation of substances on the surface of a solid medium.
3. There are two phases in a chromatographic technique: Mobile phase and stationary phase.
4. In this process, the mixture of substances is applied onto a stationary phase which may be a solid or a liquid.
5. A pure solvent, a mixture of solvents, or a gas is allowed to move slowly over the stationary phase.
6. The components of the mixture get gradually separated from one another.
7. The moving phase is called the mobile phase.