Indicate the mechanistic symbols (SN1, SN2) that are most consistent with the following statement. Select all that apply. Alkyl iodides react faster than alkyl bromides in reactions that proceed by these mechanisms. Sn1 Sn2 Indicate the mechanistic symbol (SN1, SN2) that is most consistent with the following statement. Select the single best answer. Unhindered primary halides react with potassium ethoxide in ethanol mainly by this mechanism. Sn1 Sn2