Question

Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?

• A. $NaNH_2$
• B. $HCI$
• C. $O_2$
• D. $Br_2$

Answer 1

Answer: (A)

$NaNH_2$

Answer 2

$NaNH_2$ is used to distinguish between 1-butyne and 2-butyne.
$CH_3 CH_2 \equiv CH \xrightarrow{NaNH_2}CH_3 CH_2 C \equiv CNa$
$\, \, \, \, \, \, CH_3 -C \equiv C-H \xrightarrow{NaNH_2}No\, reaction$