Question

When propyne is treated with aqueous $H_{2}S{O}_4$ in the presence of $HgS{O}_4$, the major product is:

• A. Propanal
• B. Propyl hydrogen sulphate
• C. Acetone
• D. Propanol

Answer 1

The correct option is C 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.


So, the correct answer will be option (c).