Question

Reaction of acetylene and propyne with $HgS{O}_4$ in presence of $H_{2}S{O}_4$ produces respectively.

• A. Acetone and acetaldehyde
• B. Acetaldehyde and acetone
• C. Propanaldehyde and acetone
• D. Acetone and propanaldehyde

Answer 1

The correct option is B Acetaldehyde and acetone

Like alkanes and alkenes, alkynes are also immiscible in water and do not react with water. However, one molecule of water adds to an alkyne on warming with $HgS{O}_4$ and dil. $H_{2}S{O}_4$ at 333 K to form a carbonyl compound.
Hence, the correct option is (b)