CHM 202 Exam 2 Sum II 2007

CHM 202 Exam 2 Sum II 2007 - CHM 202 Summer II 2007 EXAM...

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CHM 202 Summer II 2007 EXAM TWO (Total 100 points) Name____________________ Section A Multiple Choice: SCANTRON, DO ALL QUESTIONS (2 points each = 80 points) 1. Which of the following would you expect to be aromatic? O a) b) c) d) 2. Cyclopropenyl cation has how many bonding ( π ) molecular orbitals? a) 1 b) 2 c) 3 d) 4 e) 5 3. In what orbitals are the lone pairs of electrons on the sulfur atom in thiophene? a) p and p b) sp and p c) s and p d) sp 2 and sp 2 e) sp 2 and p 4. For a compound to be aromatic, how many π electrons must be in the π system? a) an odd number d) an odd number of pairs b) an even number e) at least three pairs c) an even number of pairs 5. Which of the following molecules/species is NOT aromatic? a) pyridine b) furan c) cyclopentadiene d) cycloheptatrienyl cation e) pyrole 6. Which best describes the HOMO of cyclobutadiene? a) a half filled pair of non-bondng molecular orbitals b) a filled pair of non-bondng molecular orbitals c) a half filled pair of degenerate antibonding molecular orbitals d) a half filled pair of degenerate bonding molecular orbitals e) a filled pair of degenerate bonding molecular orbitals 7. How many π -electrons are in furan? a) 4 b) 6 c) 8 d) 10 e) 14 8. Anisole is the common name for? a) Hydroxybenzene b) Aminobenzene c) Methylbenzene d) Ethylbenzene e) Methoxybenzene 9. How many isomeric chlorobenzenesulfonic acids are possible? a) 2 b) 3 c) 4 d) 5 e) 6 10. How many different difluorophenols are possible? a) 2 b) 4 c) 6 d) 8 e) 10 11. What role does sulfuric acid play in aromatic nitration? a) produces SO 3 d) protonates aromatic ring b) it gets protanated by HNO 3 e) deprotonates intermediate c) acid catalyst 12. The IUPAC name of cinnamic acid (the flavor component of cinnamon) is? O
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This note was uploaded on 10/09/2011 for the course CHM 202 taught by Professor Higgs during the Fall '08 term at FIU.

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CHM 202 Exam 2 Sum II 2007 - CHM 202 Summer II 2007 EXAM...

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