chem 1202

Louisiana State University

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chem 1202 Group Final Exam Profs. Hogan, Kolniak, Stanley ANSWER KEY 2021
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13

maart 2022

2021/2022

A
Please answer all questions on your scantron answer sheet to hand in. You may keep these question sheets. Each question has the same value. 1. Consider the following reaction: A (aq) + B (aq) C (g) At 300 K ΔHºrxn = – 400 kJ/mol and ΔSºrxn = 400 J/K-mol. Given this data select the TRUE answer below. B. The reaction is endothermic and it’s becoming more ordered. C. The reaction is endothermic and Suniv > 0 D. The reaction is nonspontaneous and Suniv < 0. E. The...
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Chemistry 1202 Final Exam for John Hogan practice one
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31

maart 2022

2021/2022

A
Chemistry 1202 Final Exam for John Hogan Practice One 1. 2. For the gas-phase reaction shown below, choose the answer which indicates how the rate of change of N2 is related to the rate of change of O2. 4 NH3(g) + 3 O2(g) 2 N2(g) + 6 H2O(g) a) - 1/2 [N2] /t = - 1/3 [O2] /t b) 1/2 [N2] /t = 1/3 [O2] /t c) 1/2 [N2] /t = - 1/3 [O2] /t d) 1/3 [N2] /t = - 1/2 [O2] /t e) 3 [N2] /t = 2 [O2] /t (-1/Coefficient for O2) and (1/Coefficient for N2) 3. Consider the reaction of tetrafluorohydrazine wi...
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