Question

An unknown compound A has a molecular formula $B r _ { 2 }$ a new substance B with formula is formed. A forms a white precipitate with ammoniacal silver nitrate solution. A may be.

• A. Butyne-1
• B. Butyne-2
• C. Butene-1
• D. Butene-2

Answer 1

Answer: (A)

Butyne-1

Answer 2

Since the molecule takes 2 moles of $B r _ { 2 }$. Therefore it is alkyne. Also it gives white ppt with Tollen’s reagent therefore acidic H is present. Hence it is 1-Butyne.