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23(B)

23(B)

by tabassumiftekhar neha -
Number of replies: 4
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1) How does the "addition of water to alkene" reaction works ??? 

Tabassum Iftekhar Neha

id-201-29-1635

sec-23(b)

In reply to tabassumiftekhar neha

Re: 23(B)

by Mahmuda Sultana 201-29-1715 -
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Addition reactions to alkenes and alkynes are sometimes called saturation reactions because the reaction causes the carbon atom to become saturated with the maximum number of attached group. Reactions in which a multiple bond between two atoms becomes fully saturated by covalent attachment.

In reply to tabassumiftekhar neha

Re: 23(B)

by Mehedi Hasan Rabbi -
Picture of 23 B (MUA)
Tabassum Iftekhar,your ans is here..

This reaction proceeds via a standard carbocation mechanism and follows the Markovnikov rule. The mechanism for the addition of water to ethene follows.
1. The hydrogen ion is attracted to the π bond, which breaks to form a σ bond with one of the double‐ bonded carbons. The second carbon of the original double‐bonded carbons becomes a carbocation.
2.An acid‐base reaction occurs between the water molecule and the carbocation, forming an oxonium ion.
3. The oxonium ion stabilizes by losing a hydrogen ion, with the resulting formation of an alcohol.

Mehedi Hasan Rabbi
ID:201-29-1700
In reply to tabassumiftekhar neha

Re: 23(B)

by MD. Nadim Hasan -
Picture of 23 B (MUA)

Alkenes undergo an addition reaction with water in the presence of a catalyst to form an alcohol. This type of addition reaction is called hydration. The water is added directly to the carbon – carbon double bond. The hydration of alkenes can be undertaken by various methods.


ID:201-29-1702

In reply to tabassumiftekhar neha

Re: 23(B)

by Nusrat Jahan Fahima -
Picture of 23A( MUA)

The addition of water to an alkene in the presence of a catalytic amount of strong acid leads to the formation of alcohols (hydroxy‐alkanes). ... 2.An acid‐base reaction occurs between the water molecule and the carbocation, forming an oxonium ion.

ID: 201-29-1643

23(A)