Unit 3 Part 8 - 2.2.10 --> Chromatography

Question 1

What is chromatography?

Answer 1

A technique used to separate components of a mixture

Question 2

What are the two phases of chromatograohy?

Answer 2

Stationary and mobile phase

Question 3

How does a mixture separate?

Answer 3

As the mobile phase moves through the stationary

Question 4

What happens if the components of the mixture have similar IMF as the solvent?

Answer 4

There will be higher affinity for the mobile phase’
- ‘ like dissolves like’

Question 5

What is chromatography mainly used for?

Answer 5

Quantitative analysis

Question 6

What is the stationary phase?

Answer 6

The paper
- Has 10% water

Question 7

What is the mobile phase?

Answer 7

The solvent

Question 8

Why does the solvent rise up the paper?

Answer 8

B/c of capillary action

Question 9

What happens as the mixture climbs up the stationary phase?

Answer 9

It dissolves the components in the mixture to differing extents, carrying them at different rates and instances on the paper

Question 10

What is the final result called?

Answer 10

A chromatogram

Question 11

Retardation factor formula?

Answer 11

Distance moved by the component/ Distance moved by solvent