351fin09 - Page 1 of 21 UNIVERSITY OF CALGARY FACULTY OF...

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Page 1 of 21 UNIVERSITY OF CALGARY FACULTY OF SCIENCE FINAL EXAMINATION CHEMISTRY 351 December 2009 Time: 3 Hours READ ALL THE INSTRUCTIONS CAREFULLY PLEASE WRITE YOUR NAME, STUDENT I.D. NUMBER ON BOTH YOUR EXAM ANSWER BOOKLET AND COMPUTER ANSWER SHEET. The examination consists of Parts 1 - 8, each of which should be attempted. Note that some Parts provide you with a choice of questions, i.e . answer 4 out of 5. These will be graded in numerical order until the required number have been completed, regardless of whether they are right or wrong. Parts 1 - 4 will be computer graded, and Parts 5 - 8 are to be answered in the answer booklet provided. A periodic table with atomic numbers and atomic weights, and spectroscopic tables are appended to this examination paper. Parts 1 - 5 consist of a series of multiple choice questions numbered 1 - 39, which are to be answered on your computer answer sheet. Indicate your answer by blackening out the appropriate space, A, B, C, D or E on the answer sheet. Use a pencil only and not ink . In some cases it is required that you indicate multiple items for a complete and/or correct answer by blackening out more than one space. In some other cases more than five options are available and some of these also require more than one space to be blackened out. For an example, an option specified as AB requires that you blacken out both space A and space B. Part marks may be awarded in some of the questions. Incorrect answers must be erased cleanly . Molecular models are permitted during the exam; calculators are also permitted, but NOT programmable calculators . Absolutely no other electronic devices are allowed. Cont'd -->
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Page 2 of 21 20% PART 1 RELATIVE PROPERTIES ANSWER ANY TEN (10) OF QUESTIONS 1 TO 12. Arrange the items in questions 1-12 in DECREASING ORDER (i.e. greatest, most etc. first) with respect to the indicated property . Use the following code to indicate your answers. A . i > ii > iii D . ii > iii > i B . i > iii > ii E . iii > i > ii C . ii > i > iii AB . iii > ii > i 1. The relative acidity of the following: OH O O NH 2 i ii iii 2. The number of constitutionally isomeric monochlorination products from the reaction of one molar equivalent of Cl 2 / uv light with each of the following i 2-methylbutane ii 2,2-dimethylpropane iii n -pentane 3. The heats of combustion of the following alkenes (most exothermic to least exothermic): ii i i i i 4. The rate of reaction of each of the following with NaI/acetone: Br Br Br i i i i Cont'd -->
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Page 3 of 21 Use the following code to indicate your answers. A . i > ii > iii D . ii > iii > i B . i > iii > ii E . iii > i > ii C . ii > i > iii AB . iii > ii > i 5. The relative amount of the conjugate base of 2-propanone formed by the reaction of 1 mole equivalent of each of the following: O O H + CH 3 CH 2 O _ H 2 O CH 3 CO 2 ii i i i _ i + pKa = 20 _ 6. The relative acidity of the indicated atoms in the following structure: C C H O O H O H i ii iii 7. The relative stability of the following radicals: i i .
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This note was uploaded on 01/12/2010 for the course CHEMISTRY CHEM 351 taught by Professor Hunt during the Fall '09 term at University of Calgary.

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351fin09 - Page 1 of 21 UNIVERSITY OF CALGARY FACULTY OF...

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