14D_w11_e01

14D_w11_e01 - Chemistry 14D Winter 2011 Exam 1 Page 1...

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Chemistry 14D Winter 2011 Exam 1 Page 1 Page 1 score = Questions 1–3 refer to this imaginary reaction mechanism: A + B C D Δ G (A D) = -17 kcal mol -1 ; Δ G (A + B C) = 10 kcal mol -1 ; Δ G (C D) = 5 kcal mol -1 1. (2) Complete this sentence by adding no more than five words : If A is a nucleophile then B must be. .. 2. (8) Circle the best answer in each set. (a) The rate-determining step is: A + B C A + B D C D Cannot determine (b) This reaction is exothermic because Δ G (A + B C) > Δ G (C D): true false cannot tell (c) This reaction mechanism is: concerted stepwise cannot determine (d) Molecule C must be a carbocation: true false cannot determine 3. (7) Draw an energy profile for this reaction. Label all of the important features. 4. (3) Complete this statement in thirty words or less : The basic principle or guiding statement I use to decide the major product of a reaction is. .. 5. (4) Circle the best in each set. (a) Nucleophile in DMF: CF 3 CH 2 O - CH 3 CH 2 O - CH 3 CH 2 S - CH 3 CO 2 - (b) Leaving group in methanol: I - Br - Cl - F - HO - H 2 O
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Chemistry 14D Winter 2011 Exam 1 Page 2 Page 2 score = The questions on this page refer to the intramolecular (within the
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14D_w11_e01 - Chemistry 14D Winter 2011 Exam 1 Page 1...

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