ex1 07 - Answers are on the last page. Chem 1022 2/14/07,...

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Chem 1022 ________________ 2/14/07, Prof. D. Leopold Your Name (Optional) EXAM 1 (100 points) This exam covers the material in Silberberg Chapters 13 ( Solutions ) and 16 ( Kinetics ) included in the reading and problems in Homeworks #1 and #2 . You have 60 minutes to do this exam. The 1-page Equation Sheet (and periodic table) is being distributed separately. If you don't want to keep it and you haven't written on it, please return it at the end of the exam so we can reuse it and save trees. (If you write on it that's ok, but then please don't turn it in.) 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 proctor says to begin the exam, also bubble in: form A, B or C as given on a later page There are 20 multiple choice questions, worth 5 points each. 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 for a given question, no credit will be given. If you change your mind, be sure to completely erase the old answer. PLEASE DO NOT TURN THE PAGE UNTIL THE PROCTOR SAYS TO BEGIN. Good luck ! Answers are on the last page.
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2 Your Exam is Version A . Please bubble this in on your bubble sheet (under "FORM"). Part I. Solutions (10 questions, 50 points) The following constants may be useful when solving problems in Part I: K f water 1.86 o C/ m K b water 0.512 o C/ m 1. Which one of the 5 diagrams below best represents an ionic compound dissolved in water?
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3 2. The solubility of O 2 in water __________ with increasing temperature, and __________ with increasing partial pressure of the O 2 gas above the liquid. A. decreases, decreases B. decreases, increases C. decreases, remains constant D. increases, decreases E. increases, increases F. increases, remains constant 3. Consider the following 3 (ideal) solutions: (#1) 0.10 m ammonium nitrate (NH 4 NO 3 ) (#2) 0.10 m sucrose (C 12 H 22 O 11 = table sugar) (#3) 0.10 m magnesium chloride (MgCl 2 ) Which of the following lists these solutions in order of increasing
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ex1 07 - Answers are on the last page. Chem 1022 2/14/07,...

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