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CHE201B - Exam 1 2008

CHE201B - Exam 1 2008 - Organic Chemistry 201B/203B First...

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Organic Chemistry 201B/203B First Midterm Examination September 26, 2008 Name (Print) _________________________________ Class and Section _________________________________ Signature _________________________________ Student ID Number _________________________________ Problem Possible Score Points I (60 pts) ___________ II (15 pts) ___________ III (20 pts) ___________ IV (15 pts) ___________ V (20 pts) ___________ VI (20 pts) ___________ Total (150 pts) __________
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2 (I) Circle the letter of the correct answer. (5 pts each) (1) Which of the following statements about the physical properties of organic molecules is false? (a) The substitution of a methyl group for a hydrogen at an alkane causes an increase in the boiling point of the molecule. (b) The boiling point of a linear alkane increases with increasing chain length. (c) The substitution of an HO- group for a hydrogen at an alkane causes an increase in the boiling point of the molecule. (d) The boiling point for alkanes of constant molecular weight increases with increasing branching. (e) The boiling point for alkanes of constant molecular weight decreases with increasing branching. (2) Which of the following statements about valence bond resonance structures is true? (a) Contributing valence bond resonance structures with a minimum number of octets at the individual atom will make the largest contribution to the overall structure. (b)
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CHE201B - Exam 1 2008 - Organic Chemistry 201B/203B First...

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