ORG CHEM (ACT 7- THIN LAYER CHROMATOGRAPHY) FINALS

Question 1

is a microanalytical technique which enables mixtures of organic or inorganic compounds to be separated by adsorption, partition or ion-exchange on a thin layer or film of adsorbent coated on a glass plate.

Are prepared by making a slurry of the adsorbent, which may contain a binding agent, usually with water and then coating the plates with slurry.

Answer 1

Thin Layer Chromatography (TLC)

Question 2

As a thin film on the outside surface or on internal surfaces within the material.

Answer 2

Adsorb

Question 3

Adsorbents (5)

Answer 3

(1) Silica gel, (2) Alumina, (3) Kieselguhr, (4) Cellulose powder, (5) Acetylated and ion-exchanged cellulose powder

Question 4

Solvents (4)

Answer 4

(1) Acetone, (2) Ethanol, (3) Benzene, (4) Water

Question 5

2 phases

Answer 5

(1) Stationary (absorption) , (2) Mobile Phase (mobile phase)

Question 6

Heart of Chromatography;
Most sensitive machine when it comes to liquid

Answer 6

High_Performance Liquid Chromatography (HLPC)

Question 7

Used to test the purity of volatile compounds

Answer 7

Gas Chromatography

Question 8

formula

Answer 8

rf= distance covered by dye (cm)/ distance covered by solvent(cm)