AS2.5 Organic (External)

This externally assessed standard is worth 5 credits and is essential for
understanding at Level 3.
You will cover a large amount of content and the teaching component will take
approximately 10 weeks of class time.

The following is a comprehensive list of all the key areas that you must cover for AS2.5.

what you need to know!

Selected organic compounds are limited to: alkanes, alkenes, alkynes, haloalkanes, primary amines, alcohols, and carboxylic acids.
Properties are limited to:

constitutional and geometric (cis and trans) isomers
classification of alcohols and haloalkanes as primary, secondary or tertiary
solubility, melting and boiling points
chemical reactions.

Chemical reactions are limited to:

addition reactions of alkenes with H2/Pt, Cl2, Br2, H2O/H+ (conc. H2SO4/H2O) and hydrogen halides (including identification of major and minor products on addition to asymmetric alkenes), polymerisation
substitution reactions of:
- alkanes with halogens (limited to monosubstitution)
- alcohols with hydrogen halides, PCl3, PCl5, SOCl2
- haloalkanes with ammonia and aqueous potassium hydroxide
oxidation of:
- primary alcohols to form carboxylic acids with MnO4-/H+ or Cr2O72-/H+
- alkenes with MnO4–
elimination of (including identification of major and minor products for asymmetric reactants):
- water from alcohols
- hydrogen halides from haloalkanes
acid–base reactions of carboxylic acids and amines.