PRACTICAL ORGANIC CHEMISTRY (OC-10)
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  ELEMENT DETECTION          FUNCTIONAL GROUP            KEY PREPARATIONS
  (Lassaigne's Test)           TESTS                    & TITRATIONS
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 N test        S test       C=O Group    Non-C=O     Acetanilide   KMnO4/
  |              |           |              |          Synthesis    Oxalic Acid
Prussian    Purple       ┌───────┐     Phenol           |          Titration
Blue        (nitro-      |       |     (FeCl3→          |              |
(NaCN+      prusside)  Aldeh- Ketone   Violet)      p-Nitro-     Self-indicating
FeSO4/                 yde              |            acetanilide  60-70°C
H2SO4)                 |        |     Amine                       Endpoint=
  |                 Tollens  2,4-DNP  (Carbyl-      Iodoform     Persistent Pink
 N+S:               (Ag      (orange  amine→       (CHI3)
NaSCN→             mirror)   ppt)    isocyanide)
FeCl3→
Blood Red
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   Halogen test
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 Cl      Br      I
AgCl    AgBr    AgI
White   Pale    Yellow
Soluble Yellow  Insoluble
in NH3  Partial in NH3