Exam 1 FS04 - CEM 351 1st EXAM/Version A Friday October 1...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CEM 351 1st EXAM/Version A Friday, October 1, 2004 1:50 – 2:40 p.m. Room 138, Chemistry Name (print) Key Signature Student # Section Number (2 pts extra credit) Grade? . 1.(20 pts.) . 2.(20 pts.) . 3.(20 pts.) . 4.(20 pts.) . 5.(20 pts.) . 6.(20 pts.) TOTAL (100 pts.) Score Note: Answer any 5 questions for a total score of 100 pts. Be sure to look over all the questions first before beginning the exam, and indicate which five questions are to be graded by checking the corresponding box. Recitation Day and Time Instructors: Room 1. T 9:10-10:00 a.m. Cory Newman 323 2. M 10:20-11:10 a.m. Jun Yan 218A 3. T 10:20-11:10 a.m. Cory Newman 220 4. Th 10:20-11:10 a.m. Vijay Gopalsamuthiram 220 5. T 10:20-11:10 a.m. Cory Newman 220 6. T 11:30-12:20 p.m. Cory Newman 218B 7. Th 11:30 - 12:20 Vijay Gopalsamuthiram 323 8. M 4:10-5:00 p.m. Jun Yan 110
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 1. (20 pts) Among compounds of formula C 4 H 6 Cl 2 , identify, draw, label if needed, and name… a) (6 pts)…a meso compound, an achiral cyclopropane, and a compound with no dipole. Structures: (all acceptable answers are displayed; only one needed in each box) Names:_ cis,cis-1,2-dichloro-3-methylcyclopropane 1 _ Meso Names:_ cis,trans-1,2-dichloro-3-methylcyclopropane 2 _ Names:_ cis-1,2-dichlorocyclobutane 3 _ Names:_ cis,cis-1,2-dichloro-3-methylcyclopropane 1 _ Achiral Names:_ cis,trans-1,2-dichloro-3-methylcyclopropane 2 _ cycloprop . Names:_ dichloromethylcyclopropane 4 _ Names:_ 1-chloro-1-chloromethylcyclopropane 5 _ Names:_ trans-1,3-dichlorocyclobutane 6 _ No dipole Names:_ E-2,3-dichloro-2-butene 7 _ Names:_ E-1,4-dichloro-2-butene 8 _ b) (4 pts)…an E and Z pair of alkenes. Structures: (too many possible; start w/ above cpds) Names:_ E-2,3-dichloro-2-butene 7 _ Names:_ Z-2,3-dichloro-2-butene 9 _ Names:_ E-1,4-dichloro-2-butene 8 _ Names:_ Z-1,4-dichloro-2-butene 10 _ c) (4 pts)…a pair of diastereomers, different from your answer to (a). Structures: (again, too many possible; here are a couple different from those derived from above cpds) Names:_ (1S,2S-1-Chloro-2-chloromethylcyclopropane 11 _ Names:_ (1R,2S-1-Chloro-2-chloromethylcyclopropane 12 _ Names:_ Z-1,2-dichloro-2-butene 13 _ Names:_ E-1,2-dichloro-2-butene 14 _ d) (6 pts)…a pair of enantiomers. Clearly label stereogenic centers R or S. Structures: (again, too many possible; here are a couple different from those derived from above cpds).
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern