Question

Amongst the following compounds, the one which would not form a white precipitate with ammonical silver nitrate solution is

• A. $HC = CH$
• B. $H_{3} C-C\equiv C-CH_{3}$
• C. $H_{3} C-C\equiv CH$
• D. $CH_{3} CH_{2} CH_{2} C\equiv CH$

Answer 1

Answer: (B)

$H_{3} C-C\equiv C-CH_{3}$

Answer 2

The structure of but-2-yne shows that there is no acidic hydrogen attached to the sp hybrid carbon atom. Hence no reaction with ammonical $AgNO_{3}$ is expected