Which of the following reacts fastest with concentrated HCI? – InterviewSolution

1.	Which of the following reacts fastest with concentrated HCI?
Answer» `(CH_(3))_(3)COH` `CH_(2)=CH-CH_(2)OH` Solution :The rate of REACTION depends upon the stability of the carbocations. Out of the following four carbocations possible (i) `C_(6)H_(5)CH_(2)CH_(2)` (ii) `C_(6)H_(5)CHCH_(3)` (iii) `(CH_(3))_(3)C^(+)` (IV) `CH_(2)=CHCH_(2)` Carbocation (ii) is the most stable since it is not only a `2^(@)` carbocation but is also stabilized by RESONANCE. HENCE alcohol (b) reacts at the fastest rate.

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