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Question
Amongst the following alcohols which would react fastest with cone. HCl and ZnCl2?
Options
pentanol
2-methyl butanol
2-pentanol
2-methyl butan-2-ol
MCQ
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Solution
2-methyl butan-2-ol
Explanation:
ZnCl2 + cone. HCl is Lucas reagent. Tertiary alcohol causes the fastest reaction with the Lucas reagent.
3° alcohol + Lucas reagent = Immediate turbidity
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