exam4key - CHEM 331, Fall 2005 Final Exam ANSWER KEY first...

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CHEM 331, Fall 2005 Final Exam Ian R. Gould PRINTED NAME 1. Be sure your exam has 13 Questions 3. Read the directions for each problem CAREFULLY. 4. Write CLEARLY. Illegible answers will be considered to be incorrect. 5. Molecular models are allowed. 6. Do not use red ink. 7. Don't cheat, use common sense. 3 / 15 5 / 20 7 Total / 375 2. Use any blank pages as scratch paper. They will not be graded. 6 2 / 24 first last ASU ID Name of Person on your LEFT (or write Empty or Aisle) 1 / 8 nomenclature Acid/Base MO's Comparisons Extra Credit / 5 synthesis steps H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn RIGHT 8 / 56 10 / 36 9 / 30 products mxn/energy diagram mxn 1 11 / 36 mxn 2 12 / 30 optically active 13 / 52 conformations Grand Total / 28 reagents / 20 spectrum 4 / 20 Faster ANSWER KEY
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CHEMISTRY 331, Fall 2005 FINAL EXAM - 2 - Question 1 ( 8 pts.) Give the IUPAC name for the following. Specify stereochemistry as appropriate. NAME (6R)-bromo-(3,4S)-methyl-(2E)-heptene Br Question 2 ( 24 pts.) For the following reactions + Br H + LB/BB LA/BA endothermic, breaks 2 bonds only makes one bond 1. Give the major products and the curved arrow pushing that describes the bond breaking/making 2. Indicate the Lewis acid/base and whether they are also Brønsted acids/bases 3. Indicate whether the reaction is endothermic or exothermic and justify your answer with a BRIEF 1 sentence explanation a) + Na LA/BA H LB/BB b) C H H C C C H H H H H H + Na H C H H C C C H H H H H H exothermic, makes resonance stabilized anion H C H H + C C H H H C C H H H H H C H H + H LB/BB LA/BA exothermic,puts electron pair is an sp2 hybrid orbital instead of an sp3 orbital, lowers energy of electrons d) H H C C H H Br H H C C H H H
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Question 3 (15 pts.) a) Draw pictures of the wavefunctions of the molecular orbitals requested,
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This note was uploaded on 08/14/2008 for the course CHM 233 & 331 taught by Professor Dr.gould during the Fall '05 term at ASU.

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exam4key - CHEM 331, Fall 2005 Final Exam ANSWER KEY first...

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