For the reactions of the alkyl halides with sodium iodide in acetone, does the type of halide affect the rate of the reaction? For the reactions of the alkyl halides with 1% ethanolic silver nitrate, does the type of halide affect the rate of the reaction? (Example: 1-chlorobutane VS 1-bromobutane or 2-chlorobutane VS 2-bromobutane, etc).