AS Organic Chemical Tests

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  • Organic Chemical Tests
    • Alkenes
      • KmNO4
        • purple to pale yellow
        • gives a diole
      • Combustion
        • Gives a smoky flame
      • Bromine Water
        • Decolourises from brown
    • Alcohols
      • PCl5 (Phosphorus pentachloride)
        • misty flumes
        • R-OH + PCl5 --> POCl3 + HCl + R-Cl
      • K2Cr2O7 (+ H2SO4)
        • Primary
          • R-COOH + Cr3+
        • Secondary
          • RC(=O)R' + Cr3+
        • Tertiary
          • No reaction
        • Sodium (Na)
          • R-OH + Na --> NaOR + H2
    • Halides
      • R-X + AgNO3 --> R-OH + AgX
        • AgCl (s)
        • AgBr (s)
          • dissolves in NH3
        • AgI (s)
          • Does not dissolved in NH3
    • Alkanes
      • do not decolourise bromine water

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