Separation Techniques

Question 1

What can filtration be used for ?

Answer 1

If a product is an insoluble solid and needs to be separated form a liquid reaction mixture
And purification

Question 2

How to separate soluble solids from solutions ?

Answer 2

Evaporation - heat it up and crystals will form

Crystallisation - gently heat, solvent will evaporate, get more concentrated, once crystals start to form remove from heat and let cool.

Question 3

What is simple distillation ?

Answer 3

Separating out a liquid from a solution

Question 4

How do you do simple distillation ?

Answer 4

Heated and the part of the solution with the lowest boiling point will evaporate first, then it will cool and condense and collects.

Question 5

What is the problem with simple distillation ?

Answer 5

Can only be used to separate things with very different boiling points.

Question 6

What is fractional distillation ?

Answer 6

To separate a mixture of liquids

Question 7

How do you do fractional distillation ?

Answer 7

Mixture goes Ina flask and gets heated, they will evaporate differently