Separation Techniques

Question 1

What is distillation used for

Answer 1

Used to produce pure water
Used to separate a soluble substance from a solution

Question 2

How does distillation work

Answer 2

Liquid evaporates then travels along a tube and condenses, the pure water collects into a new container from the tube

Question 3

Example of distillation

Answer 3

Salt from salt water

Question 4

What’s the stationary phase in paper chromatography?

Answer 4

Chromatography paper

Question 5

What’s the mobile phase of paper chromatography?

Answer 5

The solvent

Question 6

Formula for Rf value

Answer 6

Rf= distance spot moved/distance solvent moved

Question 7

What does it mean if a dye doesn’t move?

Answer 7

It’s insoluble(can’t be dissolved)

Question 8

Why is the startling in paper chromatography drawn in pencil?

Answer 8

So that it doesn’t dissolve and ruin results

Question 9

In a chromatography test, what does it mean if two dyes are at the same level?

Answer 9

They are the same type of pigment

Question 10

What is filtration used to separate?

Answer 10

Insoluble solids from a solution