Kinetic information tells us that the rate is doubled when the [CH3l]is doubled,and also doubled when the [HO]is doubled. The rate is first order w.r.t.both reactants and is therefore 2dorder overall. Rate=k,[CH3I][HO] The rate and mechanism are consistent since they the mechanism requires a collision between the hydroxide ion and methyl iodide.Both species are present in the transition state,and the frequency of collisions is proportional to the concentrations of the reactants SN2 substitution,nucleophilic,bimolecular. Bimolecular means that the transitions state of the R.D.S.involves the collision of two molecules.(Bimolecular reactions generally have 2d order overall rate equations). Ch06 Alkyl Halides (landscape) Page 11Ch06 Alkyl Halides (landscape) Page 11 Kinetic information tells us that the rate is doubled when the [CH3I] is doubled, and also doubled when the [HO- ] is doubled. The rate is first order w.r.t. both reactants and is therefore 2nd order overall. Rate = kr [CH3I] [HO- ] The rate and mechanism are consistent since they the mechanism requires a collision between the hydroxide ion and methyl iodide. Both species are present in the transition state, and the frequency of collisions is proportional to the concentrations of the reactants. SN2 = substitution, nucleophilic, bimolecular. Bimolecular means that the transitions state of the R.D.S. involves the collision of two molecules. (Bimolecular reactions generally have 2nd order overall rate equations)