final - Chem 1022 5/8/07 , Prof. D. Leopold _KEY A_ Your...

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Chem 1022 ______KEY A_________ 5/8/07 , Prof. D. Leopold Your Name (Optional) FINAL EXAM (36 questions, 180 points, 5 points each) This exam covers the following material in Silberberg's "Chemistry" (4 th Edition, 2006): Part I (10 questions, 50 pts) Chapter 13 Solutions (Homework #1) Chapter 16 Kinetics (Homework #2) Part II (10 questions, 50 pts) Chapter 17 Chemical Equilibrium (Homework #3) Chapter 18 Acid-Base Reactions (Homework #4) Chapter 19 (Section 1) Buffers (Homework #5, Topics 1 and 2) Part III (10 questions, 50 pts) Chapter 19 (Sect. 2, 3) Titrations, K sp and Solubility (HW #5, Topics 3 through 8) Chapter 20 Entropy, Free Energy (Homework #6) Chapter 21 Electrochemistry (Homework #7) Part IV (6 questions, 30 pts) Chapter 22 (Sect. 2, 4) Cycles of C, N and P; Aluminum (HW #8, Topics #1, 2) Chapter 23 Transition Metals, Coordination Compounds (HW #8, Topics #3-9) Chapter 24 Nuclear Reactions (Homework #8, Topics #10, 11) You have 120 minutes to do this exam. The 1-page Equation Sheet (and periodic table) is attached as the last page of this exam. Feel free to tear it off. Please remember to use a #2 or softer pencil, and bubble in on the answer sheet: student ID number (please double check that you have bubbled this in correctly) note: exam grades are matched by WebCT to student ID numbers so you must bubble this in correctly to have your grade recorded your name (LAST name should be bubbled in first!) sign the reverse side of the bubble sheet. after the exam begins, also bubble in: form A, B or C as given on a later page You will not be penalized for incorrect answers, so you should answer every question. Each question is graded 5 or 0; there is no partial credit. If you fill in more than one answer no credit will be given. PLEASE DO NOT TURN THE PAGE UNTIL THE PROCTOR SAYS TO BEGIN.
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2 Your Exam is Version A . Please bubble this in on your bubble sheet (under "FORM"). Part I. Solutions, Kinetics (10 questions, 50 points) 1. For which of the following would dipole – induced dipole be the strongest type of intermolecular attraction between the two components? A. water, O 2 B. NaCl, water C. methanol (CH 3 OH), ethanol (CH 3 CH 2 OH) D. Na + , CCl 4 (carbon tetrachloride) E. C 6 H 12 (cyclohexane), I 2 Answer : A. water, O 2 A: water (H 2 O) has a permanent dipole moment, and O 2 has none; this is the strongest intermolecular attraction when air (O 2 and N 2 ) dissolves in water. B: ion – dipole (since NaCl dissociates into Na + and Cl - ions when dissolved in water) C: hydrogen bonding (a particularly strong type of dipole-dipole) D: ion – induced dipole E. dispersion (neither component has a permanent dipole moment or an overall charge) See pp. 490-491 and Figure 13.1. 2.
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This note was uploaded on 10/07/2009 for the course CHEM 1022 taught by Professor Leopold during the Fall '08 term at Minnesota.

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final - Chem 1022 5/8/07 , Prof. D. Leopold _KEY A_ Your...

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