14D_f10_finalB

14D_f10_finalB - Chemistry 14D 1. Fall 2010 Final Exam Part...

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Chemistry 14D Fall 2010 Final Exam Part B Page 1 Page 1 score = 1. (2) Circle the letter of the fastest S N 2 reaction. (a) I H NaSCH 3 acetone H SCH 3 (b) I H NaSCH 3 acetone CH 3 S H (c) I H NaSCH 3 acetone SCH 3 H 3 C (d) I H NaSCH 3 H SCH 3 H 2 O 2. (2) Complete this representation for the transition state of reaction question 1(a): H C I 3. (2) Complete the rate expression for the reaction of question 1(a). Be specific! rate = k 4. (2) Which of the following is influenced by the transition state of any reaction? Circle all that apply. energy of activation Δ G Δ G K eq reaction rate product ratio 5. (2) Rank the S N 2 reaction rate of these molecules with F - in DMF: CH 3 OSO 2 CF 3 , CH 3 OH, and CH 3 Br. ____________________ > ____________________ > ____________________ fastest slowest 6. (2) Rank the S N 2 reaction rate of these molecules with CH 3 I in an aprotic solvent: - C N, - CH 2 C N, and - CH 2 C CH. ____________________ > ____________________ > ____________________ fastest slowest 7. (2) Select only the protic solvents from the following list, and rank them in order of polarity: DMF, acetone, methanol, ethanol, water, and hexane. Some of the blanks might not be used. ______________ > ______________ > ______________ > _____________ > _____________ > ____________ most polar
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Chemistry 14D Fall 2010 Final Exam Part B Page 2 Page 2 score = 8. (6) Select the molecule that has the fastest S
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14D_f10_finalB - Chemistry 14D 1. Fall 2010 Final Exam Part...

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