Q.
But-1-ene $\xrightarrow[{H_3O^+}] {(CH_3COO)_2Hg}$ ?
The product in the above reaction is
Solution:
$\underset{\text{But-1-ene}}{CH_3CH_2CH = CH_2} \xrightarrow{Hg(OAc)_2} [H_3O^+]$

Solution: