C_2H_5CHO and (CH_3)_2CO can be distinguished | vedclass

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Question

(C) The correct answer is $C$.
$C_2H_5CHO$ is an aldehyde,while $(CH_3)_2CO$ is a ketone.
Aldehydes reduce Fehling solution to give a red precipitat

Vedclass · Accepted Answer

Fehling solution

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(C) The correct answer is $C$.
$C_2H_5CHO$ is an aldehyde,while $(CH_3)_2CO$ is a ketone.
Aldehydes reduce Fehling solution to give a red precipitate of cuprous oxide $(Cu_2O)$,whereas ketones do not react with Fehling solution.
The reaction for the aldehyde is: $C_2H_5CHO + 2Cu^{+2} + 5OH^{-} 	o C_2H_5COO^{-} + Cu_2O (	ext{red ppt}) + 3H_2O$.
Ketones like $(CH_3)_2CO$ do not show this reaction.

$C_2H_5CHO$ and $(CH_3)_2CO$ can be distinguished by testing with

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