In SN2 reactions of alkyl halides, the order of reactivity is RI . RBr . RCl . RF.Alkyl iodides are considerably more reactive than alkyl fluorides, often by factorsas great as 106. All 1-halo-2,4-dinitrobenzenes, however, react at approximatelythe same rate in nucleophilic aromatic substitutions. Account for this difference inrelative reactivities.
CHAPTER 1 NOTES 1.1 science- primary mean to obtain knowledge chemical- pure sample of a substance Chemistry- study of how one substance transforms into something else (deals with the behavior of matter) Technology- application of knowledge for practical purposes Alchemy- primitive form of chemistry that flourished in Europe from 500-1500 C.E., alchemists interested in a “philosopher’s stone” (turning cheaper material into gold and an elixir bringing eternal life) green/ sustainable chemistry- important because they create less pollution, keeping our world away from future destruction and preserving life on earth 1.2 Hypothesis- tentative explanations of observed data (educated guess) 5 characteristics of science: Testable Reproducible Explanatory Predictive Always t