Question

Amongst the following alcohols which would react fastest with conc. $HCl$ and $ZnC{l}_2?$

• A. pentanol
• B. 2-methyl butanol
• C. 2-pentanol
• D. 2-methyl butan-2-ol

Answer 1

Answer: (D)

$ZnC{l}^{2+}$cone. $HCl$ is Lucas reagent. Lucas reagent reacts fastest with tertiary alcohol. $3^{°}$ alcohol + Lucas reagent = Immediate turbidity