PracticeChapter 22Problems

PracticeChapter 22Problems - 1 Which ion would be most...

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1. Which ion would be most stabilized by resonance? A) CH 2 CH 2 B) CHCH 3 C) CH 2 CH 3 D) CH 2 CH 3 E) all are equally stabilized Ans: 2. Which of the following resonance structures of the phenoxide anion would be the major contributor to the real structure? A) O B) O C) O D) O E) all are equally important Ans: Page 1
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3. What is the main use of azo compounds in general? N N R A) Antibiotic properties D) Herbicides and/or pesticides B) Fragrances and flavorings E) Dyes and coloring agents C) Chemotherapy agents Ans: 4. To which side (if any) would the following equilibrium lie? C 6 H 5 O - + HOH C 6 H 5 OH + - OH A) To the left D) Reaction cannot occur at all B) To the right E) Equilibrium favors a different product. C) Equally to the left and right Ans: A 5. Why does the substitution of ortho or para nitro groups onto chlorobenzene greatly increase the tendency of the chlorine to be displaced by nucleophiles? A) NO 2 groups stabilize the S N 1 transition state by resonance. B) The NO 2 groups facilitate removal of a hydrogen α to chlorine. C) NO 2 groups stabilize the S N 2 transition state. D) NO 2 groups stabilize negative charge resulting from addition of a nucleophile. E) The NO 2 groups exert a general inductive effect which is independent of substitution position. Ans:
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This note was uploaded on 02/07/2012 for the course ECON 122 taught by Professor Staff during the Spring '11 term at Rutgers.

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PracticeChapter 22Problems - 1 Which ion would be most...

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