Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Alcohols, Phenols and Ethers

Question:

Given below are the three steps which are involved for the conversion of alkene into alcohol. Arrange them in correct sequence.

A. Nucleophilic attack of water on carbocation resulting in deprotonation.

B. Deprotonation to form an alcohol.

C. Protonation of alkene to form carbocation by electrophilic attack of H3O+.

Choose the correct answer from the options given below:

Options:

A, C, B

A, B, C

C, A, B

C, B, A

Correct Answer:

C, A, B

Explanation:

Alkenes react with water in the presence of acid as catalyst to form alcohols.

Mechanism:

The mechanism of the reaction involves the following three steps:

Step 1: Protonation of alkene to form carbocation by electrophilic attack of H3O+.

H2O + H+ → H3O+

Step 2: Nucleophilic attack of water on carbocation.

Step 3: Deprotonation to form an alcohol.