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10 9 8 7 6 5 4 3 2 (30) (24) (21) (29) (16) (22) (18) (15) (19) (26) (17) (19) (13) (16) (285) 11 1 Page Points 12 13 14 T Score HW Total Grade (HW score + Exam Grade) % Total
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Honor Code The core values of the University of Texas at Austin are learning, discovery, freedom, leadership, individual opportunity, and responsibility. Each member of the University is expected to uphold these values through integrity, honesty, trust, fairness, and respect toward peers and community. (Your signature)
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CH 3 CH 2 - H R 2 C C H H H -N( i- C 3 H 7 ) 2 RC C H COR' O RC H 2 CR' O RC H 2 CH O RC H 2 CCl O RC H 2 RCH 2 O H HO H ROC O COR' O C H 2 RC O COR' O C H 2 RC O CR' O C H 2 H 4 N CO- H O R RCH 2 O H 2 H 3 O H -Cl 10 51 -7 Compound pK a 3-5 15.7 16 18-20 11 23-25 18-20 13 15-19 40 Carboxylic acids ! -Dicarbonyls ! -Ketoesters ! -Diesters Water Alcohols Acid chlorides Aldehydes Ketones Esters LDA Alkanes Terminal alkynes 25 Terminal alkenes 44 9.2 Ammonium ion Hydronium ion Hydrochloric acid Protonated alcohol -2 -1.7
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Pg 1 _____________(30) Signature_________________________ 1. (14 points) Suppose a relative of yours is having an MRI. In no more than four sentences, explain to them what is happening when they have the MRI scan. We will be looking for a minumum of 7 key points here. True False 2. (2 pt. each) Here are a number of statements regarding aromaticity. Do not second guess yourself, this is not meant to be tricky! Check the appropriate box to indicate whether the statement is true or false. B. According to Huckel's rule, aromatic molecules are flat, monocyclic, all ring atoms have a 2p orbital (no sp3 ring atoms) and there are 4n + 2 pi electrons (i.e. 2, 6, 10, 14. ....). A. When using molecular orbital theory, it is best to think of electron density as being like waves, since it is described mathematically using wave equations. C. When drawing mechanisms or resonance contributing structures, the arrows indicate where positive or negative charges are moving between structures. D. When drawing mechanisms or resonance contributing structures, the arrows indicate where pairs of electrons are moving between structures. E. It is generally stabilizing to have pi electrons delocalized over several atoms with adjacent 2p orbitals, a situation referred to as conjugation. F. Aromaticity is a powerful stabilizing interaction, so that atoms with lone pairs will adopt a hybridization state to maximize aromaticity in a molecule. G. When trying to understand where charges are in charged aromatic molecules, you can draw resonance contributing structures and get the right answer. H. Resonance contributing structures can be used to explain why aromatic rings
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This note was uploaded on 09/14/2009 for the course CH 310n taught by Professor Iverson during the Spring '08 term at University of Texas.

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Sp08Exam3Ques - Page Points 1 2 3 4 5 6 7 8 9 10 11 12 13 14

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