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QJEEM13Ch096f: JEE Main 2013 Chemistry - Class 12 JEEM13Ch096f Solution: An unknown alcohol is treated with the “Lucas reagent” to…

An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:

Multiple Choice Options

  • A tertiary alcohol by SN1
  • B secondary alcohol by SN2
  • C tertiary alcohol by SN2
  • D secondary alcohol by SN1

Step-by-Step Verified Solution

Tertiary alcohols reacts fastest with lucas reagnet as the rate of reaction is directly proportional to the stability of carbocation formed in the reaction. Since most stable 3∘ carbocation is formed in the reaction hence it will react fastest further tetriary alcohols appears to react by SN1 mechanism.

JEE Main 2013 (Offline) Chemistry - Alcohols, Phenols and Ethers Question 156 English Explanation

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