Question:

During dehydration of alcohols to alkenes by heating with concentrated H2SO4H _{2} SO _{4} the initiation step is :

Updated On: Jul 28, 2022
  • protonation of alcohol molecule
  • formation of carbocation
  • elimination of water
  • formation of an ester
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The Correct Option is A

Solution and Explanation

Protonation of OH- OH is first step. Conversion of poor leaving group (-OH) into good leaving group (O+H2)(-\overset{+}{O}H_{2})
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Concepts Used:

Alcohols, Phenols, and Ethers

Alcohol is formed when a saturated carbon atom bonds to a hydroxyl (-OH) group. It is an organic compound that contains a hydroxyl functional group attached to a carbon atom.

Phenol is formed when the -OH group replaces the hydrogen atom in benzene. It is an organic compound in which a hydroxyl group directly attaches to an aromatic hydrocarbon.

Ether is formed when oxygen atom bonds to two alkyl or aryl groups. It is an organic compound that has an oxygen atom that is connected to two aryl and alkyl groups.

Read More: Alcohol, Phenol, and Ethers