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Alkenes react with water in the presence of acid as catalyst to form alcohols.
- a)Deprotonation to form alcohol
- b)Nucleophilic attack of water on carbocation
- c)Protonation of alkene and carbocation
- d)All of these
Correct answer is option 'D'. Can you explain this answer?
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Alkenes react with water in the presence of acid as catalyst to form a...
Hydration of alkene involves all these steps. 1.Protonation of alkene and formation of carbocation. 2.nucleophilic attack of water on carbocation 3.deprotonation and formation of alcohol.
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Alkenes react with water in the presence of acid as catalyst to form a...
Deprotonation to form alcohol:
When an alkene reacts with water in the presence of an acid catalyst, the first step involves the acid protonating the alkene. This means that a proton (H+) from the acid attaches to one of the carbon atoms in the alkene, forming a carbocation. The carbocation is a positively charged carbon atom that is attached to three other groups.
Nucleophilic attack of water on carbocation:
In the next step, water (H2O) acts as a nucleophile, meaning it donates a pair of electrons to the positively charged carbon atom of the carbocation. This results in the formation of a new bond between the carbon atom and the oxygen atom of water. As a result, an alcohol is formed.
Protonation of alkene and carbocation:
In addition to the nucleophilic attack of water on the carbocation, the acid catalyst also protonates the alkene. This means that another proton from the acid attaches to the other carbon atom in the alkene, forming a second carbocation. This carbocation can also undergo nucleophilic attack by water to form another alcohol.
All of these reactions occur simultaneously and are part of the mechanism for the hydration of alkenes. The deprotonation of the alkene, nucleophilic attack of water on the carbocation, and protonation of the alkene and carbocation all contribute to the formation of alcohols from alkenes in the presence of an acid catalyst.
Overall, the correct answer is option D because all of these steps are involved in the reaction between alkenes and water in the presence of an acid catalyst to form alcohols.
When an alkene reacts with water in the presence of an acid catalyst, the first step involves the acid protonating the alkene. This means that a proton (H+) from the acid attaches to one of the carbon atoms in the alkene, forming a carbocation. The carbocation is a positively charged carbon atom that is attached to three other groups.
Nucleophilic attack of water on carbocation:
In the next step, water (H2O) acts as a nucleophile, meaning it donates a pair of electrons to the positively charged carbon atom of the carbocation. This results in the formation of a new bond between the carbon atom and the oxygen atom of water. As a result, an alcohol is formed.
Protonation of alkene and carbocation:
In addition to the nucleophilic attack of water on the carbocation, the acid catalyst also protonates the alkene. This means that another proton from the acid attaches to the other carbon atom in the alkene, forming a second carbocation. This carbocation can also undergo nucleophilic attack by water to form another alcohol.
All of these reactions occur simultaneously and are part of the mechanism for the hydration of alkenes. The deprotonation of the alkene, nucleophilic attack of water on the carbocation, and protonation of the alkene and carbocation all contribute to the formation of alcohols from alkenes in the presence of an acid catalyst.
Overall, the correct answer is option D because all of these steps are involved in the reaction between alkenes and water in the presence of an acid catalyst to form alcohols.
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Alkenes react with water in the presence of acid as catalyst to form alcohols.a)Deprotonation to form alcoholb)Nucleophilic attack of water on carbocationc)Protonation of alkene and carbocationd)All of theseCorrect answer is option 'D'. Can you explain this answer?
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