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RP12: Thin Layer Chromatography

Separate species by thin-layer chromatography (TLC) and determine Rf values

Required PracticalAQAA-Level

๐Ÿ”ฌ Equipment Required

  • TLC plates (silica or alumina)
  • Development tank with lid
  • Suitable solvent system
  • Capillary tubes or micropipettes
  • UV lamp (254 nm)
  • Pencil
  • Ruler
  • Iodine chamber (optional)
  • Standard samples

๐Ÿฆบ Safety Precautions

  • Wear safety glasses
  • Many solvents are flammable - no naked flames
  • Work in fume cupboard
  • UV light can damage eyes - do not look directly at lamp
  • Handle TLC plates by edges only

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About RP12: Thin Layer Chromatography

RP12: Thin Layer Chromatography is a required practical for AQA A-Level Chemistry. This practical separate species by thin-layer chromatography (tlc) and determine rf values

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 AQA A-Level Chemistry exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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