The decreasing order of SN2 reaction for the given compounds is

Question

The decreasing order of SN2 reaction for the given compounds is (A) I > II > III > IV (B) II > I > III > IV (C) IV > III > II > I (D) IV > III > I > II

Tardigrade Admin · Accepted Answer

Rate of SN2 reaction propto -I-effect, - M-effect propto(1/steric crowding) I. CH3 - CH2 - CH2 - Cl II. Ph - CH2 - CH2 - Cl Thus, rate of SN2 reaction is II > I > III > IV.

Q. The decreasing order of S_N2 reaction for the given compounds is

I > II > III > IV

II > I > III > IV

IV > III > II > I

IV > III > I > II

Rate of S_N2 reaction $\propto$ -I-effect, - M-effect
$\propto \frac{1}{s t er i c cro w d in g}$
$I . C H_{3} - C H_{2} - C H_{2} - Cl$
$II . P h - C H_{2} - C H_{2} - Cl$
Thus, rate of S_N2 reaction is II > I > III > IV.

Q. The decreasing order of SN2 reaction for the given compounds is