In a SN 2 substitution reaction of the type R - Br + Cl - xrightarrowD M FR - Cl + Br - which one of the following has the highest relative rate?

Question

In a SN 2 substitution reaction of the type R - Br + Cl - xrightarrowD M FR - Cl + Br - which one of the following has the highest relative rate? (A) CH3 - CH2 - CH2Br (B)  (C)  (D) CH3CH2Br

Tardigrade Admin · Accepted Answer

SN 2 mechanism is followed in case of primary and secondary halides i.e., SN 2 reaction is favoured by small groups on the carbon atom attached to halogens so CH 3 CH 2 Br > CH 3 CH 2 CH 2 Br >

Q. In a $S_{N} 2$ substitution reaction of the type $R - B r + C l^{-} D MF R - Cl + B r^{-}$ which one of the following has the highest relative rate?

$C H_{3} - C H_{2} - C H_{2} B r$

$C H_{3} C H_{2} B r$

$S_{N} 2$ mechanism is followed in case of primary and secondary halides i.e., $S_{N} 2$ reaction is favoured by small groups on the carbon atom attached to halogens so $C H_{3} C H_{2} B r > C H_{3} C H_{2} C H_{2} B r >$

Q. In a SN​2 substitution reaction of the type R−Br+Cl−DMF​R−Cl+Br− which one of the following has the highest relative rate?

CH3​−CH2​−CH2​Br

CH3​CH2​Br

SN​2 mechanism is followed in case of primary and secondary halides i.e., SN​2 reaction is favoured by small groups on the carbon atom attached to halogens so CH3​CH2​Br>CH3​CH2​CH2​Br>

Q. In a $S_{N} 2$ substitution reaction of the type $R - B r + C l^{-} D MF R - Cl + B r^{-}$ which one of the following has the highest relative rate?

$C H_{3} - C H_{2} - C H_{2} B r$

$C H_{3} C H_{2} B r$

$S_{N} 2$ mechanism is followed in case of primary and secondary halides i.e., $S_{N} 2$ reaction is favoured by small groups on the carbon atom attached to halogens so $C H_{3} C H_{2} B r > C H_{3} C H_{2} C H_{2} B r >$