Midterm 2005 - Chemistry 213a 2005 Midterm Code 111 Page 1...

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Chemistry 213a 2005 Midterm Code 111 Page 1 Before you start, please enter code 111 on your Scantron sheet 1. Which one of the following has a net dipole moment equal to zero ( i.e. which one is a non-polar molecule)? A) CH 3 OCH 3 B) CH 3 NH 2 C) CH 2 Cl 2 D) CH 3 CCH 3 O E) CO 2 2. Risperdal , shown below, is a medication for the treatment of bipolar mania. What are the hybridizations and approximate bond angles of the atoms indicated? O N N O F N N i iv iii ii i ii iii iv A) sp 2 sp 2 120° sp 2 B) sp 3 sp 2 120° sp 2 C) sp 3 sp 3 109° sp 3 D) sp 2 sp 3 109° sp 3 E) sp 2 sp 2 109° sp 3
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Chemistry 213a 2005 Midterm Code 111 Page 2 3. Which one of the following has no net charge? Assume all atoms have a full valence shell. A) HO B) H 2 NC H CH 2 OH COO C) CH 3 CH 2 NO 2 D) NH 4 E) CH 3 O 4. Taking the starting materials and products into consideration, which one of A ± E shows the proper use of organic-chemistry arrow conventions? A) O H OH B) O O H O O H C) O H O H D) NH 2 H NH 2 H E) S O O O HO H S O O O HO H
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Chemistry 213a 2005 Midterm Code 111 Page 3 5. Which functional group is NOT present in the anti-malarial drug quinine? A) Amide B) Alcohol C) Ether D) Alkene E) Amine 6. The measured pKa values for three acids are shown below. Which one pKa value listed in A ± E is possible for the boxed molecule? COOH pKa = 4.8 COOH pKa = 4.5 Cl COOH pKa = 2.9 Cl COOH pKa = ? Cl A) 4.7 B) 2.5 C) 4.0 D) 5.1 E) 1.9 HO O N N
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Chemistry 213a 2005 Midterm Code 111 Page 4 7. Which one of the following is the weakest acid? A) CH 3 CH CH 2 B) SH C) HC CH D) O OH E) OH 8. Arrange the following compounds in the order of base strength, from the strongest base to the weakest base. I II III HC C CH 3 CH 2 OH 2 NH 2 IV CF 3 CH 2 NH 2 strongest base weakest base A) III IV II I B) II IV III I C) IV III I II D) I IV III II E) I III IV II
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Chemistry 213a 2005 Midterm Code 111 Page 5 9. Given the pKa values for the four acids listed below, which one of equilibria A ± E lies furthest to the LEFT?
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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 2005 - Chemistry 213a 2005 Midterm Code 111 Page 1...

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