Haloalkanes And Haloarenes Ques 54
54. Consider the reactions :
[2011 M]
The mechanisms of reactions (i) and (ii) are respectively :
(a) $S_N 1$ and $S_N 2$
(b) $S_N 1$ and $S_N 1$
(c) $S_N 2$ and $S_N 2$
(d) $S_N 2$ and $S_N 1$
Show Answer
Answer:
Correct Answer: 54.(a)
Solution:
- (a) First reaction is $S_N 1$ reaction because $C_2 H_5 OH$ is used as solvent which is a weak nucleophile.
Second reaction is $S_N 2$ reaction because $C_2 H_5 O^{-}$ is a strong nucleophile.
A strong nucleophile favours the $S_N 2$ reaction and a weak nucleophile favours the $S_N 1$ reaction.
BETA
