chm exam 3 fall 06 key

chm exam 3 fall 06 key - CHM 2045 Exam 3 (Form Code A)...

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CHM 2045 Exam 3 (Form Code A) November 21, 2006 Instructions This exam consists of 20 multiple choice questions each worth 10 points for a total maximum of 200 pts. You may retain your exam sheet (mark your answers on it). Turn in only the scantron. You may not use anything but your own calculator and pencil during this exam. Your name on this exam states the assertion: “ I hereby pledge that I have neither given nor received unauthorized aid during this exam.” Possibly useful info : R = 8.3144 J/K mol R = 0.08206 L atm/K mol 1 atm = 760 torr =14.70 lb/in 2 = 1.01325 bar = 10 5 Pa 1. What is the hybridization of the sulfur atom in SF 4 ? (1) sp (2) sp 2 (3) sp 3 (4) sp 3 d (5) sp 3 d 2 2. In which of the following molecules and ions does the central atom have sp 2 hybridization: BF 3 , NO 2 - , NH 2 - , H 2 O? (1) BF 3 and NO 2 - (2) NO 2 - and NH 2 - (3) NH 2 - and H 2 O (4) BF 3 and NH 2 - (5) NO 2 - and H 2 O 3. In valence bond theory, the π bond between the two carbon atoms in C 2 H 4 results from: (1) the overlap of the 2 s orbitals from each carbon atom. (2) the overlap of a 2 s orbital from one carbon atom with one lobe of a 2 p orbital from the other carbon atom. (3) the above and below the molecular plane overlap of a 2 p orbital from each carbon atom. (4)
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This note was uploaded on 04/24/2008 for the course CHM 2045 taught by Professor Mitchell during the Fall '07 term at University of Florida.

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chm exam 3 fall 06 key - CHM 2045 Exam 3 (Form Code A)...

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