CHEM301 F06 E2bkey

CHEM301 F06 E2bkey - CHEM 301 EXAM 2B 26 October 2006 Dr...

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CHEM 301 EXAM 2B NAME ____________________________ 26 October 2006 Dr. Suzanne Ruder Student ID: _________________________ Group # On my honor, I have neither given nor received aid on this exam______________________ signature INSTRUCTIONS: Read all questions carefully. If you have a question, raise your hand and someone will assist you. Paper other than the exam paper and molecular models are not permitted. Do your own work, and cover your answers. Part 1: Multiple Choice (4 pts each). Use the form provided to scratch off your answer. If your answer is correct there will be a star; if your answer is not correct, scratch off your second choice to receive partial credit for your answer. Scratch off questions 11-23 on your form. 11) Given the bond dissociation energies below (in kcal/mol), calculate the overall H° for the following reaction: (CH 3 ) 3 CH + Cl 2 → (CH 3 ) 3 CCl + HCl (CH 3 ) 3 C–H 91 (CH 3 ) 3 C–Cl 79 (CH3)2CHCl 80 Cl–Cl 58 H–Cl 103 CH 3 –Cl 84 A) -16 kcal/mol B) -32 kcal/mol C) -33 kcal/mol D) -52 kcal/mol 12) Which of the following reactive intermediates can best be described as both nucleophilic and strongly basic? A) carbanions
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This note was uploaded on 04/30/2011 for the course CHEM 301 taught by Professor Sahli during the Spring '07 term at VCU.

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CHEM301 F06 E2bkey - CHEM 301 EXAM 2B 26 October 2006 Dr...

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