14D_f10_finalB_key

14D_f10_finalB_key - Chemistry 14D Fall 2010 Final Exam...

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Chemistry 14D Fall 2010 Final Exam Part B Solutions Page 1 Statistics : High score, average and low score will be posted on the course web site after exam grading is complete. The exam is ready to be picked up when these numbers are posted. A note about exam keys : The answers presented here may be significantly longer than expected from a student taking the exam. An exam key serves not only to reveal what was expected, but to instruct you as well. To see the projected course grade cutoffs, consult the grading scale on the Chem 14D course web page. The final grade cutoffs cannot be determined until after the final exam has been graded. 1. I H NaSCH 3 acetone H SCH 3 2. H C I δ CH 3 S δ H 3 C Ph CH 3 3. Rate = k [R–I] [ - SCH 3 ] 4. Energy of activation Δ G , and reaction rate 5. CH 3 OSO 2 CF 3 (fastest) > CH 3 Br > CH 3 OH (slowest) 6. - C N (fastest) > - CH 2 C CH > - CH 2 C N (slowest) 7. Water (most polar) > methanol > ethanol (least polar) 8. CH
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14D_f10_finalB_key - Chemistry 14D Fall 2010 Final Exam...

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