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Alcohols, Phenols And Ethers

Question
CBSEENCH12008322

How can we distinguish between 1°, 2° and 3° alcohols by the reaction with Cu at 573 K?

Solution
1° alcohol on reaction with Cu/573 K gives an aldehyde with same number of carbon atoms
RCH subscript 2 OH space rightwards arrow from 573 space straight K to Cu of space RCHO space plus straight H subscript 2 left parenthesis dehydrogenation right parenthesis
2° alcohol on reaction with Cu/573 K gives a ketone with same number of carbon atom.

3° alcohol undergo dehydration with Cu/573 K to form an alkene