Question

Which reagent cannot be used to prepare an alkyl halide from an alcohol ?

• A. $\ce{ HCl + ZnCl2}$
• B. $\ce{NaCl}$
• C. $\ce{PCl5}$
• D. $\ce{ SOCl2}$

Answer 1

Answer: (B)

$\ce{NaCl}$

Answer 2

${NaCl}$ is an ionic compound cannot displace - OH by Cl. Rest all other reagents ${( HCl + ZnCl_2 , PCl_5,SOCl_2 )}$ displaces -OH from alcohol and provide ${Cl^-}$ as a nucleophile.