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Consider the reactions : (1) (CH(3))(...

Consider the reactions :
(1) `(CH_(3))_(2)CH-CH_(2)Br overset(C_(2)H_(5)OH)rarr (CH_(3))_(2)CH-CH_(2)OC_(2)H_(5)+HBr`
(2) `(CH_(3))_(2)CH-CH_(2)Br overset(C_(2)H_(5)O^(-))rarr (CH_(3))_(2)CH-CH_(2)OC_(2)H_(5)+Br^(-)`
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`

Text Solution

Verified by Experts

The correct Answer is:
A
A strong nucleophile favours the `SN^(2)` reaction and a weak nucleophile favours the `S_(N)1` reaction.
First reaction is `S_(N)1` reaction because `C_(2)H_(5)OH` used as solvent which us a weak nucleophile.
Second reaction is `S_(N)2` reaction because `C_(2)H_(5)O^(-)` is strong nucleophile.
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