Final A11 - Chemistry 13 Name _______________________ Final...

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Unformatted text preview: Chemistry 13 Name _______________________ Final Exam Form A Section _______________________ Summer 2006 Student No. _______________________ 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 31 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). 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 13 FINAL EXAM Summer 06 FORM A --------------------------------------------------------------------------------------------------------------------------------------- 1. What is the oxidizing agent in the reaction below which occurs in dry cell batteries? Zn (s) + 2NH 4 + (aq) + 2MnO 2 (s) Zn +2 (aq) + Mn 2 O 3 (s) + 2NH 3 (aq) + H 2 O A. Zn (s) B. NH 4 + (aq) C. MnO 2 (s) D. Zn +2 (aq) E. Mn 2 O 3 (s) --------------------------------------------------------------------------------------------------------------------------------------- 2. Given an aqueous solution containing Fe +3 (aq), Zn +2 (aq), Ni +2 (aq), and Cu +2 (aq), what product will form at the cathode when a current is passed through the electrolytic cell? A. Fe +2 (aq) B. Ni (s) C. Cu (s) D. Fe (s) E. Zn (s) --------------------------------------------------------------------------------------------------------------------------------------- 3. Which one of the following reactions would have a positive value for ! S? A. Ba(OH) 2 (s) + CO 2 (g) BaCO 3 (s) + H 2 O (l) B. N 2 (g) + 3H 2 (g) 2NH 3 (g) C. 2SO 3 (g) 2SO 2 (g) + O 2 (g) D. AgNO 3 (aq) + HCl (aq) AgCl (s) + HNO 3 (aq) E. 2H 2 (g) + O 2 (g) 2H 2 O (l) --------------------------------------------------------------------------------------------------------------------------------------- 4. Which one of the following statements is true about the equilibrium constant for a reaction if ! G for the reaction is negative? A. K = 0 B. K = 1 C. K > 1 D. K < 1 --------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------...
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This note was uploaded on 07/23/2008 for the course CHEM 112 taught by Professor Vandersluys,lorschmid,kylem during the Fall '07 term at Pennsylvania State University, University Park.

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Final A11 - Chemistry 13 Name _______________________ Final...

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