Single Choice

Acid catalysed dehydration of t-butanol is faster than that of n-butanol because:

Atertiary carbocation is more stable than primary carbocation
Correct Answer
Bprimary carbocation is more stable than tertiary carbocation
Ct-butanol has a higher boiling point
Drearrangement takes place during dehydration of t-butanol.

Solution

Alcohol $$+ H_2SO_4 \rightarrow$$ Alkene
The dehydration reaction is an elimination reaction that goes via carbocation formation. Since tertiary carbocations are most stable due to + Inductive effect of alkyl groups, then is the secondary and least stable is primary.
Therefore the reactivity of alcohol is governed by the stability of carbocation that follows the order as
Tertiary > secondary > primary
Hence, acid catalysed dehydration of t-butanol is faster than that of n-butanol because tertiary carbocation formed by t-butanol is more stable than primary carbocation formed by n-butanol.

SIMILAR QUESTIONS

Alcohols, Phenols and Ethers

Dehydration of alcohols can be done by using:

Alcohols, Phenols and Ethers

State how the following conversions can be carried out. Ethyl alcohol to Ethene.

Alcohols, Phenols and Ethers

In the following sequence of reactions, $$CH_3Br\overset{KCN}{\rightarrow}A\overset{H_3O^+}{\rightarrow}B\overset{LiAlH_4}{\rightarrow}C$$ The end product C is:

Alcohols, Phenols and Ethers

Which of the following alcohols will give the most stable carbocation during dehydration?

Alcohols, Phenols and Ethers

Explain mechanism of acid catalyses dehydration of ethyl alcohol?

Alcohols, Phenols and Ethers

The major product of the above reaction is :

Alcohols, Phenols and Ethers

Choose the correct answer among the alternatives given: In the following reactions, (i)$$CH_3-\overset{CH_3}{\overset{|}C}H-\underset{OH}{\underset{|}C}H-CH_3\xrightarrow{H^+/heat}\underset{[Major\ product]}A +\underset{[Minor\ product]} B$$ (ii)$$A\xrightarrow[in\,absence\,of \,peroxide]{HBr,dark}\underset{Major\ product}C+\underset{Minor\ product}D$$ The major products $$A$$ and $$C$$ are respectively?

Alcohols, Phenols and Ethers

Name the reagents used in the following reaction: Dehydration of propan-2-ol to propene.

Alcohols, Phenols and Ethers

Which is the best reagent to convert cyclohexanol into cyclohexene?

Alcohols, Phenols and Ethers

In the following dehydration of diol with $$\displaystyle { H }_{ 3 }{ PO }_{ 4 }$$, following product is:

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