Question

**SHORT ANSWER** Rate data for the following substitution reaction are presented in the accompanying table. RL + NuR-Nuc + L- Based on the rate data below, does the substitution reaction above follow an Syl mechanism or an Sy2 mechanism? How did you reach your decision? Trial [R-L] [Nuc Initial Rate (M's) 0.1 M 0.1 M 3.1 x 10-6 2 0.2 M 0.1 M 6.2 x 10-6 3 0.2 M 0.2 M 1.24 x 10 1

Answer 1

rate = K LR-174 [Nu] Hasil rate countant race Law, R-Lt Nuo R-Nu ti na K = order o a, b R-L and Nul res overall order (atb) Now, from Trial (#) 1 order of the reaction w.sot respectively. bering r = K [0.1] [0.1] Szia uk [ 0.279 [0.1 from trial 2 K [ 0. 2] [o. 21 al from from tria 3 f on 0.2 2 3.18106 6,2% 754 a 2 a=1 5 and (n=83) ņ 6.2x10 6 or 0.2 1. 24 x 105 } 6.2 x 106 12.4x10676) or (²) = ² 16=1

= 2 Therefore overall order = atb (1+1) = substitution reaction were follone SN mechanism, he rate of this ryn depends on both the reactants Rate = k [RAL]' [Nu]"