Q. Best method of preparing alkyl chloride is
A) $ROH\ + \ SOCl_{2} \longrightarrow$
B) $ROH\ + \ PCl_{5} \longrightarrow$
C) $ROH\ + \ PCl_{3} \longrightarrow$
D) $ROH\ + \ HCl\overset{\ \ \ \ Anhy.ZnCl_{2}\ \ \ \ \ \ \ }{\rightarrow}$
Explanation
(a)
$ROH\ + \ SOCl_{2}\ \rightarrow \ RCl\ + \ SO_{2}\ \uparrow \ + \ HCl\ \ \uparrow \$
$\because\ SO_{2}$ and HCl are gaseous by-products and can be removed easily to get pure alkyl halide.
$\therefore$ It is best method for preparation of alkl halide.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.