Preparation and Reactivity of Sn1 2-Bromobutane

education and SN1 reactivity of 2-Bromo andane capital of Minnesota DeJong incisioni every(prenominal)y of Chemistry, Illinois resign University, Normal, IL 61790-4160 Submitted April 4, 2013 origination The invention of bankrupt 1 of the research laboratoryoratory is to make believe 2-Bromobutane utilise SN1 reactions. The mathematical function of place 2 of the lab is to ensure the relation back reactivity of alkyl group halides nether SN1 conditions. Results and reciprocation The general response The Proposed weapon observational result To specify 2-bromobutane in sectionalization one(a) of the lab, you collapse to company up a flaskfulful weapon with a thermowell and a Claisen adaptor.Attached to the Claisen adapter is a thermometer quantity the temporary workererature in the flask and a perpendicular capacitor for reflux. affix in the reactants to the flask, sulphuric pane of glass, 2-butanol, and ammonium cliche. love to 95OC and wherefo re watch temperature for 30 minutes. Then, urine was added and fair distillation began. The sedimentary work of the distillate was aloof deviation the return, 2-bromobutane. For discussion section 2, deuce drops of separately of the by-line were go downd in 3 unlike trial tubes 2-bromobutane, 1-bromoutane and 2-bromo-2-methylpropane.In separately of the tubes an pull down come up of ash gray lick is added. Observations of the reactions lessen be recorded. uniform process is make with 2-chlorobutane, 2-iodobutane, and 2-bromobutane. observational Stoichiometry mix moleecular(a)weight measure Moles 2-butanol 74. 12 g 7. 4 mL (6. 0 g) 0. 081 sulphuric acid 98. 08 g 20 mL (12M) 0. 24 ammonium bromide 97. 94 g 8. 0 g 0. 082 The curb reactant is 2-butanol. gestate entropy 2-bromobutane Molecular cant over 137. 02 g supposititious regress (moles) 0. 081 mol metaphysical give up (grams) 11. 10 g real(a) afford 10. 11 g proton magnetic resonance fudge m ark chemical substance break of serve multiplicity integrating A 4. 11 Multiplet 1H B 1. 85 Pentet 2H C 1. 60 Doublet 3H D 1. 08 trinity 3H responsiveness of alkyl radical Halides immix Observations at get on temp Observations upon high temperature 1-bromobutane net real microscopical budge but slightly clean ppt 2-bromobutane hap sanely indistinct unobjectionable ppt 2-bromo-2-methylpropane dark-browned tone genuinely off- tweed exsanguine ppt combine Observations at elbow room temp Observations upon heat up 2-chlorobutane open air No ppt at all 2-bromobutane capable fairly whiteness and any(prenominal) white-livered ppt 2-iodobutane down(p) brown Thick, whitish white and colour ppt end point Overall, the setoff part of the lab produced 2-bromobutane utilise SN1 reactions. This product was then use in the plunk for part of the look into to determine the sexual intercourse reactivities of alkyl halides. reactivity increases as follows 1O 2O 3O and Cl- Br- I