Chemical testings for organic ions

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  • Created by: Katy **
  • Created on: 23-04-14 17:02
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  • Organic
    • Alkenes
      • C=C
      • reagant
        • Bromine water
          • Br2
      • observation
        • orange/brown ? colourless
    • Alcohol
      • R-OH
      • reagant
        • Potassium dichromate (VI)
        • Sulfuric acid
      • dioxided
        • carboxylic acid
    • Carboxylic acid
      • R-COOH
      • reagant
        • Sodium hydrogen carbonate solution
        • Sodium carbonate solution
      • observation
        • bubbles
        • gas given off turns limewater milky
          • carbon dioxide
            • CO2
    • Infra-red Spectroscopy
      • identify bonds present in organic molecule
      • different bonds = different IR spectrum
      • IR bonds same
        • problem
      • used in breath test for drink driving
        • C-H bond
        • O-H bond in water
      • old test
        • blow into balloon with Potassium dichromate (VI) crystals
          • crystals turned green if alcohol present

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