Identification of ketonic functional group

Aim: To identify the functional group present in an organic compound.

Preliminary test:

(i) Physical State	Liquid
(ii) Colour	Colourless
(iii) Odour	Like nail polish remover
(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 & red litmus paper	No reaction	Organic substance is neutral in nature.
3	Flame Test: Touch the organic substance on copper wire and ignite it	Non-sooty flame is produced	Compound is aliphatic
4	Functional Group Analysis:       (i) Organic substance + 2,4-dinitrophenylhydrazine (ii) Organic substance + Tollen reagent + heat (iii) Organic substance + m-dinitrobenzene + dil.NaOH (iv) organic compound + sodium nitroprusside solution + NaOH solution	Yellow ppt produced Violet colour produced Red ppt is produced Red-violet solution is produced	Carbonyl group is present  Aldehyde group absent  Ketonic group is present Ketonic group is confirmed

                             

Result: The given organic compound contains the Ketonic functional group.