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Difference between phenol and alcohol
Typical phenolic odour
Pleasant alcoholic odour
Nature, reaction with alkali
Acidic, dissolves in sodium hydroxide forming sodium phenoxide.
Neutral, no reaction with alkalies.
Reaction with neutral FeCl3
Gives violet colouration due to formation of complex compound.
Reaction with halogen acids
No reaction with halogen acids.
Forms ethyl halides.
Pink or brown colour due to formation of quinone and phenoquinone.
Undergoes oxidation to give acetaldehyde and acetic acid.
Reaction with HCHO
Forms polymer (bakelite).
Liebermann's nitroso reaction
Does not show.
Coupling with benzene diazonium chloride
Forms azo dye.
Does not form any dye.
Reaction with PCl5
Mainly forms triphenyl phosphate.
Forms ethyl chloride
The valency of phosphorus in H3 PO 4 is: (1) 2 (2) 5 (3) 4 (4) 1 Ans: 5
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