CHE201B - Exam 1 2006 Key

CHE201B - Exam 1 2006 Key - 1. True or False. (max 30 pts)...

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Exam-1-Fall06-Key.doc 1 1. True or False. (max 30 pts) a) Organic chemistry is the chemistry of carbon compounds. True b) Electronegativity is a measure of the negative charge. False c) Polar bonds are formed between atoms of different electronegativities. True d) The polarity of a molecule depends only on the type of covalent bonds it has. False e) Isomers are different compounds sharing the same molecular formula. True f) Weak acids have higher pK a values than strong ones. True g) All cycloalkanes have ring strain. False h) sp 2 Hybrid orbitals give rise to bond angles of 120° True i) Cis and trans isomers only occur among cyclic alkanes. False j) A π bond is not cylindrically symmetrical. True
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2 2. Draw Lewis structures (lines for bonds and dots for all lone pairs) for the following molecules: (24 pts) NO 3 - (a) CH 3 OH (b) (c) O O (d) O N O O C C O H O H H H H C O H H H C C C C C H H H H H H H For each problem: 2 pts for showing all atoms; 2 pts for showing all bonds; 2 pts for showing lone pairs (if any). H
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This note was uploaded on 10/10/2010 for the course CHE 201 taught by Professor Bong during the Fall '08 term at SUNY Buffalo.

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CHE201B - Exam 1 2006 Key - 1. True or False. (max 30 pts)...

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