Question

How are the following compound obtained by hydration of alkenes?

Isopropyl alcohol

Answer 1

Propene with cold 80% H₂SO₄ gives isopropyl hydrogen sulphate which further on boiling with water gives isopropyl alcohol.

\[\begin{array}{cc}
\ce{\underset{Propene}{CH3 -} CH = CH2 + \underset{Cold 80\% conc.}{HOSO3H} -> CH3 - CH - CH3}\\
\phantom{....................................}|\\
\phantom{..........................................}\ce{\underset{Isopropyl hydrogen sulphate}{OSO3H}}
\end{array}\]

\[\begin{array}{cc}
\ce{CH3 - CH - CH3 + H2O ->[boil] CH3 - CH - CH3}\\
|\phantom{.............................}|\phantom{..}\\
\phantom{.....}\ce{OSO3H}\phantom{..................}\ce{\underset{Isopropyl alcohol}{OH}}
\end{array}\]