Testing for Organic Functional Groups

Alkenes
1. Bromine Water Br2 (aq)
  1. Bromine water turns from orange to colourless
Haloalkane
1. Aqueous silver nitrate and ethanol (the isolate the halide ion)
  1. Chlorine: White precipitate Bromine: cream precipitate Iodine: Yellow precipitate
Phenols
1. Bromine water
  1. 2,4,6-tribromophenol
  2. Colourless
  3. White Precipitate
2. Doesn't react with carbonates
Carbonyls (Ketones + Aldehydes)
1. Brady's Reagent (2,4-DNP)
  1. Orange Precipitate is formed who's melting point can be tested for identification of substances
Aldehyde
1. Tokens Reagent
  1. Silver Mirror
2. No reaction with Ketones
Oxidation of Alcohols
1. Primary
  1. Acidified Potassium Dichromate
    1. Turns from orange to green and an aldehyde and then a carboxylate acid is formed
2. Secondary
  1. Acidified Potassium Dichromate

Resource summary

	Created by Bee Brittain over 7 years ago