In the Lucas test ( + conc. ) for differentiating alcohols, which of the following yields immediate — Practical Organic Chemistry and Purification Chemistry Question
Question
In the Lucas test ($ZnCl_2$ + conc. $HCl$) for differentiating alcohols, which of the following yields immediate turbidity at room temperature?
Answer: D
💡 Solution & Explanation
The reaction proceeds via an $S_N1$ mechanism. 2-Methylpropan-2-ol is a tertiary ($3^\circ$) alcohol, generating a highly stable tertiary carbocation and immediate insoluble alkyl chloride turbidity.
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