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Question: Answered & Verified by Expert
Why is the reactivity of all the three classes of alcohols with conc. HCl and ZnCl2(Lucas reagent) different?
ChemistryAlcohols Phenols and EthersNEET
Options:
  • A The reactivity of alcohols with Lucas reagent is the same for all three classes, as the reagent reacts with all alcohols equally.
  • B The reaction of alcohols with conc. HCl and ZnCl2(Lucas reagent) are different because it occurs through intermediate formation of carbocations. More stable the carbocation, the more reactive the alcohol.
  • C The reactivity of alcohols with Lucas reagent depends on the size of the alcohol molecule.
  • D The reactivity of alcohols with Lucas reagent depends on the presence of additional functional groups in the alcohol molecule.
Solution:
1351 Upvotes Verified Answer
The correct answer is: The reaction of alcohols with conc. HCl and ZnCl2(Lucas reagent) are different because it occurs through intermediate formation of carbocations. More stable the carbocation, the more reactive the alcohol.
Correct Option is : (B)
The reaction of alcohols with conc. HCl and ZnCl2(Lucas reagent) are different because it occurs through intermediate formation of carbocations. More stable the carbocation, the more reactive the alcohol.

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