14D_w09_e01

14D_w09_e01 - Chemistry 14D Winter 2009 Exam 1 Page 1 For...

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Chemistry 14D Winter 2009 Exam 1 Page 1 For any question on this exam worth three or more points, you have two choices: answer the question as written or you may write and circle the phrase “one point”. If you write “one point” you will receive one point (and only one point) of credit for the question. “One point” overrides anything you have written for that question, regardless of its accuracy. Example: (10) Briefly explain everything about organic chemistry. You may use “Ph” anywhere on this exam where appropriate. The questions on this page refer to the following incomplete S N 2 reaction. 1. (3) Draw the reaction mechanism by adding the missing curved arrows. 2. (4) Complete the drawing of the transition state. 3. (3) Complete the drawing of the product. 4. (2) Complete the following rate expression for this reaction. Be specific . Rate = k 5. (2) In the box draw the structure of acetone. Include all lone pairs and formal charges. 6. (3) Fill in the blanks with atoms that make bonds. (Example: . ..the Li –P bond. ..) There may be more spaces than answers . Within the molecular structure of acetone, the _______ –_______ and _______ –_______ bond(s) decrease(s) ε whereas the _______ –_______ and _______ –_______ bond(s) enhances(s) ε . 7. (2) Instead of acetone, what other solvent might you pick to make the reaction occur as quickly as possible? Circle one: CH 3 OH DMF H 2 O CH 2 Cl 2 8. (6) What happens to the rate of the reaction when the following changes are made? Circle one rate effect in each case. The changes are not cumulative. For example, part (b) ignores the change made in part (a)
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14D_w09_e01 - Chemistry 14D Winter 2009 Exam 1 Page 1 For...

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