Midterm 2007 - Chemistry 213a Midterm Fall 2007 Code 111...

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Chemistry 213a Midterm Fall 2007 Code 111 Page 1 Please ensure that you have entered code 111 on your answer sheet. Questions 1 – 3 refer to the compound below, a potential new anti-migraine drug. F F N O F 3 C HN N O N NH O N 1. Which functional group is NOT present? A) Ketone B) Amine C) Alkene D) Aromatic ring E) Amide 2. Which one of the five indicated bonds is the least polar bond? A) 1 B) 2 C) 4 D) 5 E) 3 F F N O F 3 C N O N O N 1 2 3 4 5
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Chemistry 213a Midterm Fall 2007 Code 111 Page 2 3. What are the hybridizations of the indicated atoms? F F N O F 3 C HN N O N NH O N 1 2 3 4 1 2 3 4 A) sp 2 sp sp 2 sp B) sp 3 sp 2 sp 2 sp 2 C) sp 3 sp 2 sp 2 sp 3 D) sp 3 sp 2 sp 3 sp E) sp 2 sp 2 sp 2 sp 2 4. Which one of A – E does procaine, a local anesthetic, NOT contain? 2 O O Cl A) Primary amine B) Ionic bond C) Nitrogen atom that is sp 3 hybridized D) Quaternary amine E) Primary carbon
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Chemistry 213a Midterm Fall 2007 Code 111 Page 3 5. For the following, which arrow is NOT written correctly? O O O O OH O H 1 2 3 4 5 A) 1 B) 4 C) 5 D) 3 E) 2 6. Which one of the following does NOT contain a carbon-carbon bond formed by the overlap of two carbon sp 3 hybrid orbitals? A) B) C) D) E) 7. Which one of the following is the most stable anion? A) O CH 2 B) 3 NH C) HC C D) O E) O O Br
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Chemistry 213a Midterm Fall 2007 Code 111 Page 4 8. Which statement explains why the pK a of dichloroacetic acid is higher than the pK a of difluoroacetic acid? O OH Cl dichloroacetic acid O F F difluoroacetic acid A) The conjugate base of dichloroacetic acid is more stable B) Cl has a larger atomic size than F C) Only the conjugate base of difluoroacetic acid is resonance-stabilized. D) The K a of dichloroacetic acid is higher E) F is more electronegative than Cl 9. Rank the following compounds from the strongest acid to the weakest acid.
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This note was uploaded on 05/01/2011 for the course CHEMISTRY Chemistry taught by Professor Dr.felixlee during the Fall '11 term at UWO.

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Midterm 2007 - Chemistry 213a Midterm Fall 2007 Code 111...

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