CHEM Ch1 Problem Answers

CHEM Ch1 Problem Answers - Br Br 5 A is NH 2 B is K eq =...

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1 CHEMISTRY 241 PROBLEMS CHAPTER 1 ANSWERS 1a. 1b. C O H H C H H H H H N O C C C H H H H H H H H H 1c. 1d. C O C N H C H C C O H H H H H H H C N C H H H H H H 2a. Cl H OH Cl H OH Cl H OH Cl H OH most important these three are less important 2b. C C C O O H H H H H C C C O O H H H H H C C C O O H H H H H C C C O O H H H H H more important more important less important less important 2c. H C C C C CH 3 O H H H H C C C C CH 3 O H H H H C C C C CH 3 O H H H less important less important more important
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2 3. The least stable cation is _____; the most stable cation is _____. H C C C H H H H H C C C H H H H H C C C H H H H H H no other contributing structure H C C C O C H H H H H H H C C C O C H H H H H H H C C C O C H H H H H H The cations differ in stability because they are stabilized by resonance to different extents. B C A: B: C: 4a. 22.25/12.01 = 1.85 Empirical formula is C 1.85 H 3.69 Br 0.93 3.73/1.01 = 3.69 Dividing through by 0.93 gives C 2 H 4 Br. 74.02/79.92 = 0.93 Since the molecular weight is 216, the molecular formula is C 4 H 8 Br 2 . 4b. Br Br Br Br Br Br Br Br Br Br
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Unformatted text preview: Br Br 5. A is NH 2 , B is K eq = 10 [33-26] = 10 +7 Because K eq is so large, the products will predominate at equilibrium. C C H 6a. CH 3 C CH 3 CH 3 CH 3 O H + C C C C O H C H H H H H H H H H H H H 3 6b. C H H H B H H H + C H H H B H H H 6c. O H O H 6d. C H H N H H CH 3 + C N H H H H CH 3 7a. O C C C O O O H H C C H H H H H H O C H H H O C C C O O O C C H H H H H H H O C H H H + H 7b. O C C C O O O C C H H H H H H H O C C C O O O C C H H H H H H H O C C C O O O C C H H H H H H H 8a. C O C N H H H H C O C N H H H H 4 8b. C O H 3 C NH 2 + OH C O H 3 C NH + H 2 O pK a 17 pK a 16 K eq = 10 [16-17] = 10-1...
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CHEM Ch1 Problem Answers - Br Br 5 A is NH 2 B is K eq =...

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