Exam1_vA_KEY - CHM 241 Exam 1 Prof. Biros, Fall 2009...

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CHM 241 Exam 1 NAME_ Rosalind Franklin __ Prof. Biros, Fall 2009 VERSION A There are 25 multiple choice (MC) questions , and each is worth 3 points. Completely fill in the appropriate circle on the scantron bubble sheet for these questions. The Short Answer (SA) section is worth a total of 25 points. You may not use any calculators or extra materials on this exam. A list of useful pK a 's can be found on page 2. “There is a single light of science, and to brighten it anywhere is to brighten it everywhere." ~Isaac Asimov GOOD LUCK!!! Write this number on your scantron sheet in the EXAM FORM box
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2 Some useful pK a 's HCl -7 H 3 O + -1.7 R-COOH ~4-5 NH 4 + 9.25 H 2 O 15.7 R-OH ~16 NH 3 38 CH 4 50
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3 VERSION A A. Multiple Choice Section . Choose the best answer to each question below and completely fill in the appropriate circle on the scantron bubble sheet for these questions. 1. What is the hybridization of the central carbon of carbon dioxide, shown below? O C O (a) sp 3 (b) sp 2 (c) sp (d) 2s (e) 2p 2. What are the geometries of the indicated atoms in the structure shown below? N H O O I II III IV (a) I = trigonal planar II = trigonal planar III = tetrahedral IV = tetrahedral (b) I = trigonal planar II = linear III = linear IV = trigonal planar (c) I = linear II = linear III = tetrahedral IV = trigonal planar (d) I = trigonal planar II = trigonal planar III = tetrahedral IV = linear (e) I = tetrahedral II = linear III = trigonal planar IV = trigonal planar 3. From your knowledge of orbitals, which of the following best represents the orbital overlap of the C-C sigma ( σ ) bond highlighted below? H
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Exam1_vA_KEY - CHM 241 Exam 1 Prof. Biros, Fall 2009...

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