Chapter 1.4 Fractional Distillation And Chromatography

Question 1

Miscible

Answer 1

Liquids that dissolve in each other mixing completely
Eg water & ethanol

Question 2

Fractional Distillation

Answer 2

Same as distillation but with bobbly glass tube
If ethanol and water needed separating
Ethanol has lower BP so the vapour gets past the glass beads without condensing and condense in the condenser (tube surrounded by water) to be collected
Water has a higher BP so condenses on the glass beads and drips back into the original flask being heated

Question 3

Paper Chromatography

Answer 3

Separates mixtures of substances dissolved in a solvent as they move up the chromatography paper
The different substances move further depending on how soluble they are