Aim : To identify the functional group in the given organic compound.
Material Required : Test tube, test tube stand, test tube holder, dropper litmus (blue) solution, dil. HCl, NaOH, Na metal, dil. H2SO4, CH3COOH.
Physical Properties:
State: Liquid
Color: Colourless
Odor: Spirit like smell
Water solubility: soluble
Flammability: Burn with non-sooty flame (Aliphatic)
Preliminary test :
S.N. |
Experiment |
Observation |
Inference |
1. |
Litmus test: Organic compound + 2 drops of
litmus solution. |
No change |
-COOH or – OH is absent |
2. |
Organic compound + dil. HCl + NaOH |
No ppt or oily layer |
-NH2 group is absent. |
3. |
Organic compound + Na metal |
H2 gas evolves |
-OH(alcohol) group may be present |
Confirmatory test :
S.N. |
Experiment |
Observation |
Inference |
1. |
Cerric ammonium nitrate Test : Organic compound +
cerric ammonium nitrate |
Red color appears |
-OH group is confirmed |
2. |
Ester Test : Organic
compound + CH3COOH + Conc. H2SO4 (1 – 2 drops) + Heat. |
Fruity smell of ester. |
-OH group is confirmed |
Result : The functional group present in the given organic compound is
alcoholic group (- OH)
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