Which of the following reagents or process are suitable to distinguish $C H_{3} C H O$ and $E t O H$ ?

N a O H + I_{2}

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Fehling test

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anhydrous Z n C l_{2} + conc. H C l

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2,4-DNP test

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Solution

The correct option is D $2,4-DNP test$
$E t O H$ is only primary alcohol to give +ve iodoform test.

$C_{2} H_{5} O H N a O H - --- \to I_{2} C H_{3} C H O N a O H - --- \to I_{2} C H I_{3} lodoform + H C O O N a$

Acetaldehyde also perform iodoform test. Hence iodoform test can not be used.
Acetaldehyde repond to fehling solution and 2,4-DNP test while ethanol does not.
Ethanol gives Lucas test positive whereas acetaldehyde does not.

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Similar questions

T e r t -

E t O H - -- \to H I - - \to

$C H_{3} C H O$ and $C_{6} H_{5} C H_{2} C H O$ can be distinguished by:

H C H O, C H_{3} C H O and C H_{3} C O C H_{3}

S O_{2}

C O_{2}

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