Chromium & Identification of Organic Compounds- Qualitiative Revision

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  • Created by: Lily
  • Created on: 18-03-13 11:13


+2 is purple

+3 is green

+6 is orange

+6 is found in K2Cr2O7 (potassium dichromate). Dichromate ions are strong oxidising agents (Cr2O7^2-).


Detecting the Presence of a Carbonyl Group (Aldehyde of Ketone)

2,4-dinitrophenylhydrazine, mixed with methanol and sulphuric acid. (BRADY's REAGENT)

Orange precipitate




Hi, is this for the OCR qualitative? Is this all I need to revise? my teacher only said revise chromium ions so I want to double check :)

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