• C=C bond
  • Bromine water turns from brown to colourless
• C-OH group
  • Add solid PCl5 and steamy fumes of HCl will produce turning blue litmus paper red and react with ammonia to release white smoke OR Add Sodium and effervescence
  • Determine whether it’s carboxylic acid or alcohol by adding to NaHCO3 which acid will produce fizzing by given off CO2 and alcohol with no reaction
  • Determine if it's aldehyde by adding benedict's solution turn from blue to orange
  • Determine if it's primary or secondary alcohol by adding (acidified) potassium dichromate(VI) and sulfuric acid - turns from orange to green