Investigating the chemistry of the OH group


  • To test for a carboxylic acid, mix with a carbonate and look for effervescence. CO2(g) emitted, can test with limewater.
  • To test for phenol group, mix with neutral FeCl3 solution and look for pale yellow colour turning purple.

Useful books for revision

Revise A2 Chemistry for Salters (OCR A Level Chemistry B)
Salters (OCR) Revise A2 Chemistry