please answer the bottom three questions for both reactions Analyze the two (2) SN2 reactions by responding to the questions.Rxn -Question ↓Draw a Lewis structurefor the nucleophile usedin this rxn which takesinto account the spectatorion.Draw a resonancestructure that shows anadditional site ofnucleophilicity in thenucleophile.Draw an SN2 mechanismfor the given rxn.Why did the nucleophileattack from the site itdid?Which rxn do you think isfaster/slower than theother?Why do you think eachrxn is faster/slower thanthe other?NaNCSH3C:N=C—SN=C:N=(H3 C+ IH3CSCNCSCN ++H3CNo~=c_~°~~=(=s: 6—(0-CEN:$0²N=C=S:+2NaNCOHO:0H₂C 1H3C=C=:0=C=NH3C NCO +(=N! Na®↓CH3NCS -----[]HH+ INCOH₂CCH3OCN......HH

The SN2 reaction is a bimolecular reaction which is go via a transition state. There is not any intermediate form during the reaction. The remaining answers of bottom three questions is given in below table Why did the nucleophile attack from the site it did ? Because, the attacking of nucleophile is only possible from back side and nucleophile donate it's electron pair HOMO to LUMO of the reactant which is lie in back side of leaving group. Because, the attacking of nucleophile is only possible from back side and nucleophile donate it's electron pair HOMO to LUMO of the reactant which is lie in back side of leaving group. Which reaction do you think faster/slower than the other ? Faster, because electronegativity of S is less and it's polarization power is high and good nucleophile than Slightly slower, because electronegativity of N is high and less polarization power. Why do you think each reaction is faster/slower than the other? Faster, because SN2 reaction go via transition state and there is no formation of any intermediate. But, in other reaction the formation of intermediate is slow step. Faster, because SN2 reaction go via transition state and there is no formation of any intermediate. But, in other reaction the formation of intermediate is slow step.