50% $\mathrm{H_2SO_4}$ can protonate suitable alkenes to give the corresponding stable carbocation intermediates. Choose the correct example of the alcohol that can be prepared by direct hydration…

Question

50% $\mathrm{H_2SO_4}$ can protonate suitable alkenes to give the corresponding stable carbocation intermediates. Choose the correct example of the alcohol that can be prepared by direct hydration of the corresponding alkene having the same number of carbons in the presence of 50% sulphuric acid.

Accepted Answer

D - 2-Methylpropan-2-ol. Acid-catalysed hydration follows Markovnikov's rule via the most stable carbocation. Isobutylene gives the tertiary cation, which yields 2-methylpropan-2-ol. Primary alcohols such as butan-1-ol or 2-methylpropan-1-ol cannot be made this way.

Answer

A - 2-Methylpropan-1-ol

Answer

B - Butan-1-ol

Answer

C - But-3-en-1-ol

50% \(\mathrm{H_2SO_4}\) can protonate suitable alkenes to give the corresponding stable carbocation intermediates. Choose the correct example of the alcohol that can be prepared by direct hydration…

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