Select the compound which on treatment with nitrous acid liberates nitrogen.

Nitroethane

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Triethylamine

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Diethylamine

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Ethylamine

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Solution

The correct option is B Ethylamine
$E t h y l a m i n e$ $C H_{3} - C H_{2} - N H_{2}$ on treatment with nitrous acid liberates nitrogen. This reaction is given by aliphatic primary amines.

$C H_{3} - C H_{2} - N H_{2} + H N O_{2} N a N O_{2} + H C l - ------- \to 273 - 278 K C H_{3} - C H_{2} - O H + H_{2} O + N_{2} ↑$

Option D is correct.

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