Midterm 1 - CHEMISTRY 112A(Monday 10:10 1'l:00 am |NTN 1020 First Name V/^Ni at t Signature srD BOX A What day does your lab meet(circle the day

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Unformatted text preview: CHEMISTRY 112A October 19, 2009 (Monday) 10:10 - 1 'l :00 am |NTN 1020 First Name V/^Ni at * t Signature srD # BOX A What day does your lab meet? (circle the day) Mon Tues Weds Thurs BOX B When does your lab meet? (circle the time) Morning Afternoon Evening (D _ (25) (lt) _ (25) (ilt) _ (25) (tv)_ (10) (v) _ (15) Total (100) BOX C Circle Your Teaching Assistant's Name Ashby, Jonathan Borukova, Svetlana Carp, Bobby Ellinger, Martin Garcia, Angie Krishnan, Mahesh Lu, Wenhao Meyet, Courtney Pierce, Conor Romero, Carmen Tao, Yuanqi Ung,Gael Xiao, Yongsheng Xu, Paul Zhang, Xing ,fr\ lP'* ,e,- 17' \* , ' ,// The back page is blank and can be torn off and used as scratch paper. First Midterm Examination-2*- Name /l,trim # 1 25 points l. Answer each ol the problems A - D below. A. The structure ol the acetate anion is shown below. Fill in any lone pairs (non-bonding valence electrons) that are missing lrom the linebond structure (Kekule structure) shown below. (5 pts) lr = {16 l-{ !r'< w aa ,/loi H3C-C: \'- ..q: 4 J- t..- a@ c; b:- ta (f B. The skeletal structure of cortisol-21-acetate is given below. This pharmaceutical compound and its analogs are involved in glucose metabolism and in the anti-inflammatory process. The six functionalgroups of the molecule below are labeled from a - 1. Place a letter corresponding to the name ol the func.tional group in the space provided below. Write "none" is there is no correct letter. (2 pts each, total = 10 pts) b 1. An alkene L , ^::l::," l'ry.ph 4. A carboxvric acio J 5. An aldehyde o JA {' P-- N,nt H cortisol-Z1-acetate lUb,'ru tw C. Given that cortisol-21-acetate (shown in part B above) contains 23 carbon atoms, what is its molecular formula? Circle the correct answer. (5 pts) c23H4oo6 C2sH32Oa D. For cortisol-21-acetate shown above in part B, what is the hybridization ol the atoms of the lunctional group a? Circle the correct answer. (5 pts) 1. sps oxygen and sps carbon 2. sps oxygen and sp2 carbon 4. sp2 oxygen and sps carbon 1. C23H48O6 G;"ruPn 3. 4. 4F 5F 6€ 25 points -3*- ll. Do each of the following multiple choice questions. conect answer. (5 pts each) Name You must indicate your answer by circling the fuail(fr 1 A. How many constitutional isomers are there for the molecular formula CaH16O that are alcohols? a)2 b)3-tTa-o-F- B. U/hat is the IUPAC name of the following a) 2-ethyl-3-propylpentane b) 3-methyl-4-propylhexane C. \l/hich ol the following represents a conlormation with the substituents Br and F in gauche positions? i compound? r BTF 'A- 1 F :s] H 2 F ;+J Bro F :+;' H4 6,.f <,€ a)1 b)2 @ D. \L/hich ol the following compounds can adopt a chair conformation in which there are virtually no or minimal amounts of axial methyl group conformers?...
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This note was uploaded on 04/03/2010 for the course CHEM chem112a taught by Professor Okamura during the Fall '09 term at UC Riverside.

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Midterm 1 - CHEMISTRY 112A(Monday 10:10 1'l:00 am |NTN 1020 First Name V/^Ni at t Signature srD BOX A What day does your lab meet(circle the day

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