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RP4: Identification of Ions

Carry out test-tube reactions to identify cations and anions

Required PracticalAQAA-Level

๐Ÿ”ฌ Equipment Required

  • Test tubes and rack
  • Bunsen burner (for flame tests)
  • Nichrome wire
  • Dilute sodium hydroxide
  • Dilute ammonia
  • Dilute acids
  • Silver nitrate solution
  • Barium chloride solution
  • Litmus paper

๐Ÿฆบ Safety Precautions

  • Wear safety glasses
  • Barium chloride is toxic
  • Silver nitrate stains skin
  • Ammonia is an irritant - use in fume cupboard
  • Concentrated HCl for cleaning wire - use with care

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About RP4: Identification of Ions

RP4: Identification of Ions is a required practical for AQA A-Level Chemistry. This practical carry out test-tube reactions to identify cations and anions

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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