chromatography

Question 1

what are the 4 types of of chromatography

Answer 1

paper
column
thin layer
gas

Question 2

what is chromatography

Answer 2

a family of separation techniques
which depends on the principle a mixture can be separated if dissolved in a solvent or carried by a gas
and the resulting solution moves over a solid

Question 3

what is the mobile phase

Answer 3

where the molecules can move this is always a liquid or gas

Question 4

what is the stationary phase

Answer 4

where the molecules can’t move

this must be on a solid or a liquid on solid support

Question 5

how are substances separated in chromatography

Answer 5

substances are separated according to reactive affinity to stationary and mobile phase

Question 6

what is the stationary and mobile phase in paper chromatography

Answer 6

stationary phase absorbent paper

mobile phase solvent

Question 7

what is the stationary and mobile phase in column chromatography

Answer 7

stationary phase powder or a resin

mobile phase solvent

Question 8

what is the stationary phase and mobile phase in thin layer chromatography

Answer 8

stationary phase powder(SiO2 or Al2O3)

mobile phase solvent

Question 9

what is the stationary phase and mobile phase in gas chromatography

Answer 9

stationary phase- powder coated with oil packed into a long capillary tube
mobile phase- unreactive gas nitrogen or helium