[graded] consider these two reactions. krel is the "relative rate constant," a quantitative measure of how fast reactions go relative to each other. bu ncn is a salt: ch2cl2 solvent oso, ch, + bu ncn cn kg = 0.1 cen ch, cl, solvent oso, ch, + bu, non kred= t o an bu = butyl (4-carbon) chain (a) why do you think the cyanide anion is introduced as a salt with bu4nrather than as a salt with, say, nat ? (b) explain the difference in reaction rates. in other words, why does the first reaction proceed so much more slowly than the second reaction? (they're done at the same temperature and with the same concentrations of reagents.)