1. Tardigrade
  2. Question
  3. Chemistry
  4. 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 :

Q. 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 :

 1826  210 NTA AbhyasNTA Abhyas 2020Alcohols Phenols and Ethers Report Error

Solution:

3° alcohol reacts fastest giving white turbidity immediately on adding lucas reagent.

Reaction takes place through carbocation formation involving SN1 mechanism,Rate of reaction in this reaction is directly proportional to the stability of the carbocation formed.

3° R-OH(tertiary alcohol) forms 3° carbocation and therefore,the reaction is fastest.

Solution