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PAG 12: Chromatography and Spectroscopy

Use chromatography to separate mixtures and analyse using spectroscopic data

Required PracticalOCRA-Level

๐Ÿ”ฌ Equipment Required

  • TLC plates (silica)
  • Development tank with lid
  • Capillary tubes
  • UV lamp (254 nm)
  • Various solvent systems
  • Pencil and ruler
  • Column chromatography apparatus (optional)
  • Spectra data sheets (IR, NMR, MS)
  • Data tables for interpretation

๐Ÿฆบ Safety Precautions

  • Wear safety glasses
  • Organic solvents are flammable - no naked flames
  • Work in fume cupboard
  • UV light damages eyes - do not look directly
  • Handle TLC plates by edges
  • Iodine is harmful - use in fume cupboard

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About PAG 12: Chromatography and Spectroscopy

PAG 12: Chromatography and Spectroscopy is a required practical for OCR A-Level Chemistry. This practical use chromatography to separate mixtures and analyse using spectroscopic data

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in OCR A-Level Chemistry exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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