fall07org1e1

fall07org1e1 - Fall 07: Exam 1. Ch 1-4 100points Name If...

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Fall 07: Exam 1. Ch 1-4 100points N a m e If you do not want your graded exam placed in the box outside my office, then please check here Answer all the questions. 1) Draw Lewis structures (lines for bonds and dots for all lone pairs) for the following molecules: (5pts) (a) NF 3 (b) HCO 2 H 2) (16pts): For the below molecule, calculate the number of… O HO F F F OH O NH 2 a) carbon atoms b) hydrogen atoms c) oxygen atoms d) Bromine atoms e) sp 2 hybridized carbons f) sp 2 hybridized atoms g) sp 3 hybridized atoms h) lone pairs (non bonding pairs) of electrons Fall07org1exam1 page1
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3) (8pts) (i) What is meant by the term Mechanism ? (ii) What is meant by Structural Isomer ? (iii) What is the Hammond Postulate ? (iv) What is Entropy ? 4) For the following pairs of compounds, state whether they are the DIFFERENT, SAME, STEREOISOMERS or STRUCTURAL ISOMERS. (12pts) (a) (b) (c) (d) (e) (f) Br H Br H H Br Br H H Br Br H H H Br Br Br H F H F H Cl H CH 3 H Br H Br H CH 3 H CH 3 H F H F CH 3 H H Br Br F Br Br F Br Br Fall07org1exam1 page2
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fall07org1e1 - Fall 07: Exam 1. Ch 1-4 100points Name If...

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