Question

Lucas reagent is:

• A. conc. HCl and anhydrous $ZnC{l}_2$
• B. conc. HCl and hydrous $ZnC{l}_2$
• C. conc. $HN{O}_3$ and hydrous $ZnC{l}_2$
• D. conc. $HN{O}_3$ and hydrous $ZnC{l}_2$

Answer 1

The correct option is A conc. HCl and anhydrous $ZnC{l}_2$

Lucas reagent is a mixture of conc. HCl and anhydrous $ZnC{l}_2.$
It is used to differentiate alcohols into primary secondary and tertiary alcohols.
$R_{3}COH+HCl\stackrel{ZnC{l}_2}{\to }{R}_{3}CCl+H_{2}O$
Hence, option a is correct.