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112_Fa11_FNL-A - Chemistry 112 Final Exam Form A Name...

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Chemistry 112 Name _______________________ Final Exam Form A Section _______________________ December 15, 2011 eMail _______________________ IMPORTANT : On the scantron (answer sheet), you MUST clearly fill your name , your student number , section number , and test form (white cover = test form A; yellow cover = test form B). Use a #2 pencil. There are 40 questions on this exam. Check that you have done all of the problems and filled in the first 40 bubbles on the scantron. The maximum score on this exam is 40 points. Your score will be reported in percent (max 100%). Exam policy Calculators with text-programmable memory are not allowed. Relevant data and formulas, including the periodic table, are attached at the end of this exam. Your grade will be based only on what is on the scantron form. The answer key will be posted on the web after the exam (on the Exam Schedule page). You must turn in your cover sheet with your scantron answer form. Hints As you read the question, underline or circle key words to highlight them for yourself. Avoid errors from "mis-reading" the question. Pay attention to units and magnitudes (decimal places) of numbers obtained from calculations. There is no penalty for guessing. CHEMISTRY 112 FINAL EXAM December 15, 2011 Form A ------------------------------------------------------------------------------------------------------------ 1. What is the oxidation state of manganese in MnO 4 (aq)? A. 1 B. +2 C. +3 D. +4 E. +7 ------------------------------------------------------------------------------------------------------------ 2. In the following reaction, how is the rate of Br 2 formation related to the rate of HBr consumption? 4 HBr(g) + O 2 (g) 2 Br 2 (g) + 2 H 2 O(g) ------------------------------------------------------------------------------------------------------------ 3. What is the pH of a 2.6 x 10 3 M aqueous solution of calcium hydroxide at 25°C?
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------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------ 4. Which one of the following is most likely to form double bonds to other elements? ------------------------------------------------------------------------------------------------------------ 5. What is the product of the emission of 27 Mg? A. 26 Al B. 26 Na C. 27 Na D. 26 Mg E. 27 Al ------------------------------------------------------------------------------------------------------------ 6. Which one of the following substances has the highest entropy at 25°C? C. C 2 H 2 (g) D. C 2 H 6 (g) E. C 6 H 6 (l) ------------------------------------------------------------------------------------------------------------
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