2007 Exam 1

2007 Exam 1 - Chemistry 162 Recitation Section Number: Exam...

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Chemistry 162 Exam I February 14, 2007 Student Name (Print): ____TAVSS________________ Recitation Section Number: t Recitation Instructor: ____TAVSS______________ The exam booklet has 25 questions for credit and one additional question to check the color of your exam booklet. Please answer all 26 questions on the OpScan sheet. Use the best answer of the choices available. There is no penalty for guessing. At the end of the 80-minute exam period, please hand in only this top sheet and your OpScan form. If you finish early, please do not disturb your fellow students. A proctor will check your picture ID, OpScan form, signature and calculator during the exam. The use of calculators with permanent memories (graphing calculators), cell phones, pagers, PDAs or other electronic devices other than a basic scientific calculator is expressly forbidden. The last page of the booklet contains a periodic table along with other useful data. The use of any other notes or information on this test will be considered a violation of the Academic Honesty provisions of the student code. Exam scores will be posted as soon as possible. ON THE OpScan FORM (Use a #2 pencil or darker) Sec Per. Instr Sec Per. Instr 1. SIGN your name across the top of the form. 01 M3 RA 30 Th3 NM 2. Code the following information ( blacken circles) 03 M5 RA 31 Th3 ET Your Name (LAST NAME FIRST) 04 M5 MR 33 M6 RA Your SOCIAL SECURITY NUMBER 06 W3 DS 34 M6 NM [Start under Box A and continue to Box I ] 07 W3 LP 36 W6 HS Your RECITATION SECTION NUMBER in 08 W5 LP 37 M8 NM [Sections 01-08, code a 0 under box K ] 11 F3 HS 39 W8 HS Your EXAM FORM NUMBER under box P 17 M1 MR 19 M3 NM LP = L. Petrone, RA = R. Agarwal 20 M3 DS HS = H. Sangari, DS = D. Siegel, NM = N. Marky 23 W1 ET MR = M. Rabeony, ET = E. Tavss 25 W3 ET Periods: 1 = 9:30-10:25, 3 = 12:15-1:10 or 12:50-1:45 26 W3 NM 5 = 3:35-4:30, 6 = 5:15-6:10, 8 = 8:25p-9:20p Your EXAM FORM is C162s06e1v1 1
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1. CHEM 161-2007 EXAM I + ANSWERS CHAPTER 12 - PROPERTIES OF SOLUTIONS ENERGETICS OF SOLUTIONS AND SOLUBILITY CONCEPTS Which of the following hypothetical steps is predicted to be exothermic? A) pure solvent → separated solvent molecules B) pure solute → separated solute molecules C) separated solvent and separated solute molecules → solution D) pure solvent and pure solute → heterogeneous mixture E) not enough information to answer this question (A) Breaking a solvent-solvent bond requires energy input. Therefore it is endothermic. (B) Breaking a solute-solute bond requires energy input. Therefore it is endothermic. (C) Forming a solution from separated solvent and separated solute molecules means solute- solvent bond formation. This gives off energy. It is exothermic. (D) If pure solute (e.g. sucrose[s]) and pure solvent (e.g., hexane[l]) form a heterogeneous
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This note was uploaded on 05/22/2008 for the course CHEM 162 taught by Professor Siegal during the Spring '08 term at Rutgers.

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2007 Exam 1 - Chemistry 162 Recitation Section Number: Exam...

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