Question

What is chromatography? Underline the basic principle involved in it. What are its various applications?

Answer 1

Chromatography is a technique used to separate mixtures into its components. ... Different substances move at different speeds which allows the mixture to separate in its components

Answer 2

★ Chromatography...✒

• Chromatography is a process of separation of different dissolved components of a mixture by adsorbing them over an adsorbent material like filter paper or alumina.

• Chromatography is used for separation of those components whose relative solubility in a solvent is different.

★ Basic Principle...✒

• The basic principle in chromatography is that different solutes have different solubility in the same solvent.

• E.g. If a spot of ink is taken on a paper and dipped in water then the coloured component which is more soluble in water rises faster.

• The other component which is less soluble remains at the bottom.

• Hence, the two components can be separated.

★ Applications...✒

• It is used to separate different colours in an ink or a dye.

• It is used to separate pigments from natural colours.

• It is used to separate drugs from blood.