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 :

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TestHub · Accepted Answer

3° alcohol reacts fastest giving white turbidity immediately on adding lucas reagent.
Reaction takes place through carbocation formation involving S_N¹mechanism,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.

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