333F07ex1ans - CHM 333 Key to Semester Exam #1 September...

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1 CHM 333 Key to Semester Exam #1 September 19, 2007 E. B. Skibo Print Name Sign Name Post I.D. # PLEASE PRINT YOUR NAME ON LAST PAGE TOO. ANSWER QUESTIONS ONLY IN THE SPACES PROVIDED. DO NOT WRITE ON THE BACK OF PAGES, I WILL NOT GRADE ANSWERS ON THE BACK OF PAGES. 1. (30 pts) Multiple choice/fill in the blanks. Put your answer in the space provided. D a) The compound methylamine, CH 3 NH 2 , contains a C-N bond. In this bond, which of the following best describes the charge on the nitrogen atom? A) +1 B) Slightly positive C) Uncharged D) Slightly negative E) -1 E Which of the following covalent bonds has the largest dipole moment? (A) C-C (B) C-H b) (C) C-O (D) H-N (E) H-F E Which carbon(s) in the following molecule is (are) sp hybridized? O H 3 C H 1 2 3 4 5 A) Carbon 1 B) Carbon 2 C) Carbon 1, 3 c) D) Carbon 4 E) Carbon 4, 5
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2 C Which of the following would have the highest boiling point? A) CH 3 CH 2 -O-CH 2 CH 2 -O-CH 3 d) B) CH 3 -O-CH 2 CH 2 CH 2 -O-CH 3 C) HO-CH 2 CH 2 CH 2 CH 2 -OH D) CH 3 CH 2 -O-CH 2 -O-CH 2 CH 3 E) H 3 CO OCH 3 CH 3 A e) Which of the following is a pair of constitutional isomers? A) Neopentane and Isopentane B) Isohexane and 2-Methylpentane C) Neohexane and 2, 2-Dimethylbutane D) Neopentane and 2,2-Dimethylpropane E) Neopentane and Neohexane
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333F07ex1ans - CHM 333 Key to Semester Exam #1 September...

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