Which of the following reacts fastest with a mixture of anhydrous ZnCl_2 and conc. HCl? **[Kerala CEE 2004]**

JEE Main Chemistry question

Which of the following reacts fastest with a mixture of anhydrous and conc. HCl? **[Kerala CEE 2004]**

(A)Trimethyl carbinolCorrect
(B)Ethanol
(C)Propanol
(D)Methanol

Answer: (A)

Solution

The Lucas reagent (anhydrous + conc. HCl) reacts fastest with tertiary alcohols because they form the most stable carbocation. Trimethyl carbinol, , is a tertiary

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Question ID VK-148437