tests for anions

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Created by
Esther

Cards (8)

  • CARBONATES
    add dilute HCl to test sample
    run the gas produced through limewater and see if it turns cloudy
  • SULFATES
    add dilute HCl to purify sample
    add barium chloride solution
    watch for a white precipitate
  • HALIDES
    add dilute nitric acid to purify sample - removes carbonate ions
    add silver nitrate (silver ions react with halide ions to form a precipitate)
    the colour formed depends on the halide ion
  • HALIDES
    Cl - white
    Br - cream
    I - yellow
  • CARBONATES
    carbonate + acid = salt + carbon dioxide + water
  • SULFATES
    Ba + SO =BaSO4
  • HALIDES
    Ag + Cl = AgCl (s)
  • An anion is a negative ion