Question

Mechanism of Protonation of Alkene to form carbonation by electrophile attack of H3O+.

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Answer 1

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➡During the hydration of alkenes, in presence of acid; the H2O molecule combines with H+ ion from acid to form H3O+ ion which acts as an electrophile and thus attacks the ethene molecule to form carbocation as follows:

↗During the hydration of alkene, one carbon involved in double bond gets protonated and double bond is broken. While the other carbon has only 3 bonds and it has one less bond. It becomes electrophilic in nature

↗Formation of Carbocation is a Reaction intermediate

See attachment ⤴

➡In this process a hydrogen atom is added to ethene molecule and thus protonation of alkene is done.

➡The further mechanism leads to the formation of an alcohol as follows:

Note- Rearrangement can possible

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Answer 2

Answer:

Explanation:

During the hydration of alkenes, in presence of acid; the H2O molecule combines with H+ ion from acid to form H3O+ ion which acts as an electrophile and thus attacks the ethene molecule to form carbocation as follows:

During the hydration of alkene, one carbon involved in double bond gets protonated and double bond is broken. While the other carbon has only 3 bonds and it has one less bond. It becomes electrophilic in nature

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