AS.13 Alcohols

Question 1

Primary alcohol

Answer 1

Carbon bonded to OH group is bonded to 1 other carbon atom (or 2 H atoms)

Question 2

Secondary alcohol

Answer 2

Carbon bonded to OH is bonded to 2 other carbons (or 1 H atom)

Question 3

Tertiary alcohol

Answer 3

Carbon bonded to OH is bonded to 3 other carbons (or no H atoms)

Don’t react

Question 4

Solubility in water of alcohols

Answer 4

Able to form h bonds with water

As hydrogen chain becomes longer, less soluble in water

More OH groups - more lone pairs on O to form hydrogen bonds with H

Question 5

Oxidising agent

Answer 5

Adds O
Removes H

Question 6

Oxidising agent for alcohols

Answer 6

Acidified potassium dichromate

H+/K2Cr2O7

OMG
Orange to green

Question 7

Distillation

Answer 7

Vapours are cooled and collected

Low b.p. Product removed from reaction as it’s made

Used to purify organic liquids

Question 8

Reflux

Answer 8

Vapours are continuously condensed and returned to flask for further reaction

Question 9

Anti bumping granules

Answer 9

Added so mixture can boil smoothly

Question 10

Condenser

Answer 10

Piece of quick fit glassware that had a water jacket

Gases that pass through the tube are condensed to liquid

Question 11

Volatility of alcohols

Answer 11

Ability to evaporate

Low