Alcohols: (i) CH_3CH_2CH_2OH (ii) CH_3-CHOH-CH_3 (iii) CH_3-C(CH_3)(OH)-CH_3 were treated with Lucas reagent. What results do you expect at room temperature?

MHT CET Chemistry question

Alcohols: (i) (ii) (iii) were treated with Lucas reagent. What results do you expect at room temperature?

(A)(ii) and (iii) react immediately and (i) in about 5 minutes
(B)(iii) reacts immediately, (ii) reacts in about 5 minutes and (i) not at allCorrect
(C)(i) reacts immediately, (ii) reacts in about 5 minutes and (iii) not at all
(D)(i) reacts in about 5 minutes, (ii) reacts in about 15 minutes and (iii) not at all

Answer: (B)

Lucas reagent (/conc. HCl) reacts through carbocations, so the tertiary alcohol (iii) gives turbidity immediately, the secondary alcohol (ii)

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Question ID VK-079723