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  4. Acetaldehyde with sodium amalgous in water gives

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Q. Acetaldehyde with sodium amalgous in water gives

Alcohols Phenols and Ethers

Solution:

Sodium amalgam in water behaves as a reducing agent. It reduces C =0 to alcoholic -OH i.e., an aldehyde is reduced to a primary alcohol and a ketone is reduced to a secondary alcohol
$CH_2CH_2CHO +2[H] \xrightarrow{Na -Hg /Water} + \underset{\text{Ethnol}}{C_5H_5OH }$