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Amines

Question
CBSEENCH12010810
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The hydrocarbon which can react with sodium in liquid ammonia is

  • CH3CH2CH2C≡CCH2CH2CH3 

  • CH3CH2C≡CH

  • CH3CH=CHCH3

  • CH3CH2C≡CCH2CH3

Solution

B.

CH3CH2C≡CH

CH subscript 3 CH subscript 2 space minus space straight C identical to space CH rightwards arrow from increment to Na divided by Liq. space NH subscript 3 of space CH subscript 3 CH subscript 2 straight C identical to space straight C to the power of minus Na to the power of plus
It is a terminal alkyne, having acidic hydrogen.
Note: Solve it as a case of terminal alkynes, otherwise all alkynes react with Na in liq. NH3.

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