Q. $(I)CH_{3}CH_{2}Br\overset{\ \ \ \ \ \ \ LAH\ \ \ \ \ }{\rightarrow}C_{2}H_{6}and\ (II)$ $\left( CH_{3} \right)_{3}CBr\overset{\ \ \ \ \ \ \ LAH\ \ \ \ \ }{\rightarrow}$ alkene, The reason for this is
A) $(I)S_{N}2$(II) $E_{1}$ mechanism
B) (I) $S_{N}1$, (II) $E_{2}$ mechanism
C) (I)$S_{N}1$, (II) $E_{1}$ mechanism
D) (I) $S_{N}2,$(II) $E_{2}$ mechanism
Explanation
(a)
$CH_{3}CH_{2}Br\ \underset{LAH}{\overset{\ \ \ H - H\ \ \ \ }{\rightarrow}}\ \ \ CH_{3} - CH_{3} + HBr$
$s_{N^{2}}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ CH_{3}$
|
$CH_{3} - C - Br\underset{LAH}{\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}}CH_{3} - C = CH_{2} + HBr$
| $(E_{2})$ |
$\ \ \ \ \ \ \ \ \ \ \ \ CH_{3}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ CH_{3}\$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.