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Fill in the blank with the correct word.
A mixture of anhydrous and conc. is called ____ reagent which shows maximum reactivity with ____…
A mixture of anhydrous $\text{ZnCl}_2$ and conc. $\text{HCl}$ is called ____ reagent which shows maximum reactivity with ____ alcohol.
Answer
Answer
AIBlanks: Lucas; tertiary
Lucas; tertiary. Lucas reagent is an equimolar mixture of anhydrous $\text{ZnCl}_2$ and concentrated $\text{HCl}$, which shows highest reactivity with tertiary alcohols due to the formation of stable tertiary carbocations.
From ISC 2026 Chemistry Paper 1, question 1(A)(i).