Engineering
Chemistry
Nucleophilic Substitution
Chemical Properties of Alkyl Halide
Question

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:     

secondary alcohol by SN2

tertiary alcohol by SN

secondary alcohol by SN1

tertiary alcohol by SN1

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Solution

Tertiary alcohol reacts at fastest rate by SN1 mechanism