Ex2Fl05ques - Chemistry 310M/318M Dr. Brent Iverson 2nd...

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Unformatted text preview: Chemistry 310M/318M Dr. Brent Iverson 2nd Midterm Oct. 26, 2005 NAME (Print): _____________________________ SIGNATURE: _____________________________ Please Note: This test may be a bit long, but there is a reason. I would like to give you a lot of little questions, so you can find ones you can answer and show me what you know, rather than just a few questions that may be testing the one thing you forgot. I recommend you look the exam over and answer the questions you are sure of first , then go back and try to figure out the rest. Also make sure to look at the point totals on the questions as a guide to help budget your time. Note: You must have your answers written in blue or black pen if you want a regrade!!!! Do not take this in red ink, as that is what we will use to grade it! Please print the first three letters of your last name in the three boxes Please answer the following before you begin: Have you been to a recitation section since the last midterm? ____________ 10 9 8 7 6 5 4 3 2 (20) (25) (19) (18) (18) (12) (22) (19) (11) (15) (9) (16) (18) (222) 11 1 Page Points Total T Score HW 12 13 Pg 1 _____________(20) 1. (5 pts) What is the most important question in organic chemistry? Signature_________________________ 2. (10 pts) Write an acceptable IUPAC name for the following two molecules. Where appropriate, use E and Z or R and S. 3. (5 pts) Draw a structure that corresponds to the following name: ( 3Z,5S,7R )-2,2,3,4,7-pentamethyl-5-propyl-3-nonene NOTICE THIS Pg 2 _____________(25) Signature_________________________ 4. For the following carbocation: A) State the hybridization state of the indicated atom in the square box provided. In the rectangular boxes, describe the bonds indicated by the arrows in terms of overlap between hybrid orbitals (the valence bond approach). For example, answers might be or Csp 3-Csp 3 C2p-C2p Note that this part of the question is NOT about hyperconjugation. We just want a valence bond description of the bonding in a carbocation structure. C C C H C H H H H H H H H A) (1 pt each) Suppose you have a pair of enantiomers. Circle the statements that are true (for enantiomers). 5. The following statements refer to the properties of enantiomers and diastereomers 2. They must rotate the plane of plane polarized light to an equal extent, but in opposite directions. 3. They might have different boiling points. 4. They might taste differently 5. They might have different drug actions when injected into an animal or person. B) (1 pt each) Suppose you have a pair of diastereomers. Circle the statements that are true (for diasteromers). 1. They might have different melting points. 2. They must rotate the plane of plane polarized light to an equal extent, but in opposite directions....
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Ex2Fl05ques - Chemistry 310M/318M Dr. Brent Iverson 2nd...

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