Aim: To identify the functional group present in an organic compound.
Preliminary test:
|
(i) Physical State
|
Liquid
|
|
(ii) Colour
|
Colourless
|
|
(iii) Odour
|
Spirit like
|
|
(iv) Solubility in water
|
Soluble
|
Chemical Test:
|
S.No.
|
Experiment
|
Observation
|
Inference
|
|
1
|
Test for Unsaturation
Dissolve 0.2 mL of organic compound in 2 mL CCl4. Then added bromine water dropwise.
|
Brown colour of bromine not discharged
|
Unsaturation is not present
|
|
2
|
Litmus Test:
Put a drop of an aqueous solution of the original substance on a piece of blue and red litmus paper
|
No reaction
|
Organic substance is neutral in nature.
|
|
3
|
Flame Test:
Touch the organic substance on copper wire and ignite it
|
Organic substance shows non-sooty flame
|
Compound is aliphatic
|
|
4
|
Functional Group Analysis:
(i) Sodium metal test:
Organic substance + a piece of sodium metal
(ii) CERIC AMMONIUM NITRATE TEST:
Aq. Solution of organic substance + ceric ammonium nitrate solution
(iii) ESTER TEST:
Organic substance + solid sodium acetate + conc. H2SO4 + heat
|
H2 gas is evolved with brisk effervescence
Colour of solution change to red
Fruity smell is evolved
|
Alcoholic(-OH) group is present
Alcoholic(-OH) group is present
Alcoholic(-OH) group is present
|
Result: The given organic compound contains the alcoholic functional (-OH) group.
No comments:
Post a Comment