final-exam-april-2018-questions-and-answers.pdf - lOMoARcPSD|3643332 Final exam April 2018 questions and answers Chem

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StuDocu is not sponsored or endorsed by any college or university Final exam April 2018, questions and answers Chem Reac,Equilibria,Kinetics (University of Waterloo) Downloaded by Thulasi Mahendrarajah ([email protected]) lOMoARcPSD|3643332
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INSTRUCTIONS 1. A scientific calculator is permitted. No other aids are permitted. 2. Fill in the information on the top portion of your computer card now. Make sure you fill in the ovals! Section Number: Identify your section number from the list. Test Master: 001 3. This examination booklet and the Data Sheet must be returned. You may detach the last page (the Data Sheet) for use during the examination period. Return the Data Sheet at the end of the exam. 4. This examination booklet consists of 40 multiple-choice questions worth 1 mark each.. There are no deductions for wrong answers. Attempt all questions. For questions that require a numerical answer, choose the closest value. Circle A, B, C, D, or E as appropriate on this examination paper. Use a pencil to transfer your answers to the computer card. Instructor Section C. Bissonnette (8:30 am) 004 R. Marta (11:30 am) 001 L. Ingram (12:30 pm) 003 R. Marta (1:30 pm) 002 CHEM 123 SAMPLE FINAL EXAM Downloaded by Thulasi Mahendrarajah ([email protected]) lOMoARcPSD|3643332
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CHEM 123 Sample Final Exam Version 001 page 2 of 16 1. If a process is spontaneous, then which of the following statements must be true? A. The entropy of the system must increase. B. The Gibbs energy of the system must increase. C. The Gibbs energy of the system must decrease. D. The entropy of the universe cannot decrease. E. The entropy of the surroundings cannot decrease. 2. For a process that is both exothermic and reversible, are the following quantities positive (+), negative (−), or zero (0)? ΔSΔSsurrΔSuniv Downloaded by Thulasi Mahendrarajah ([email protected]) lOMoARcPSD|3643332
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CHEM 123 Sample Final Exam Version 001 page 3 of 16 3. The following process is irreversible for the specified temperature and pressure. Br2(l, 75 °C, 1 atm) Br2(g, 75 °C, 1 atm) Are the following quantities positive (+), negative (−), or zero (0) for this process?ΔHΔSΔGΔSsurr ΔSuniv 4. Which of the following has highest standard molar entropy at 298.15 K? E. S 8 (s) Downloaded by Thulasi Mahendrarajah ([email protected]) lOMoARcPSD|3643332
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CHEM 123 Sample Final Exam Version 001 page 4 of 16
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