Chemistry AQA AS Unit 2 Alcohols

Made these notes for my year 12 summer exam to revise and read over. There are spelling mistakes in most of my files but due to the busy exam schedule I had no time to correct them (sorry).

Most files have more information than what is needed but I feel it helps you feel more confident walking into the exam if you have a greater knowledge background and may help when having to apply knowledge to questions. Good luck :)

Hide resource detailsShow resource details Download Chemistry AQA AS Unit 1 Periodicity (Word Document 36.87 Kb.)

Share:

HideShow resource information
  • Created by: Chelcie
  • Created on: 02-09-13 13:26
Word Document 71.33 Kb

Pages in this set

Page 1

Preview of page 1
Alcohols
GENERAL FORMULA
CnH2n+1OH

FUNCTIONAL GROUP
OH called `ol' e.g. ethanol

POSITION ISOMERS




OH GROUP:
Diol = 2
Triol = 3
Tetraol = 4


SHAPE




PHYSICAL PROPERTIES
Melting/boiling points:
Hydrogen bonding and therefore higher than alkanes of similar Mr.

Solubility in water:
They are soluble in water as both water…

Page 2

Preview of page 2
Making ethanol from crude oil by hydration:
Ethane + steam = ethanol.
HPO
600K
6000kPa
Non renewable
Fast
Continuous process
High temperature and pressure
95% ethanol
100% atom economy


FERMENTATION:
Making ethanol from plants by fermentation:
Sugar = ethanol (+CO)
Yeast
35
Anaerobic (no O present)
Renewable
Slow
Low temperature…

Page 3

Preview of page 3
(i) propanol (alcohol) to proponal (aldehyde)

+ [O] + HO



(ii) propanol (aldehyde) to propanoic acid (carboxylic acid)


+ [O]




OR (i) + (ii) propanol to propanoic acid


+ 2[O] + HO




Alcohol secondary:
SECONDARY CANNOT FORM CARBOXYLIC ACID

(i) propan-2-ol to propanone



+ [O]




Alcohol tertiary:
DOESN'T make an…

Page 4

Preview of page 4
Use AMMONICAL (aq ammonia) solution of silver
nitrate.
If it is positive, aldehydes show as silver mirror.
Keytones are not changed with gentle oxidation.
Ag is reduced to Ag (s)


THE FEHLING'S/BENEDICT'S TESTS
Reduction of the Cu2+ to Cu
Goes from blue to brick red precipitate.
Identifies aldehydes.


Elimination Reactions…

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »