4. Consider the following reaction: CH3CNHCN Several changes are individually made to the reaction. For each of the changes stated below, indicate whether the reaction rate would increase, decrease, or remain constant. a. A methyl group is added to the \#3 carbon. b. NaCN is used as the nucleophile. c. The reaction is performed in ethanol. d. The concentration of the alkyl chloride is halved. 5. Using curved-arrow notation, draw the mechanism that accounts for both products in the following reaction. 6. Using the reaction and NMR data for compound B to determine the structures of compounds A and B in the reaction below. Compound A Compound B C8H16O2 NMR data: 4.11ppm,t,2H 2.31ppm,q,2H 1.72ppm,m,1H 1.54ppm,q,2H 1.14ppm,t,3H 0.93ppm,d,6H