Hydrocarbons Ques 51
51. Which of the following reagents will be able to distinguish between $1$-butyne and $2$-butyne?
[2012 M]
(a) $NaNH_2$
(b) $HCl$
(c) $O_2$
(d) $Br_2$
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Answer:
Correct Answer: 51.(a)
Solution:
- (a) $1$-Butyne and 2-butyne are distinguished by $NaNH_2$ because $1$-Butyne react with $NaNH_2$ due to presence of terminal hydrogen.
$CH_3- \underset{\text{ 1-Butyne }} {CH_2}-C \equiv CH+NaNH_2 $ $ \longrightarrow CH_3 CH_2-C \equiv CNa+NH_3$
BETA
