sample of orgo exam 1 - Chemistry 331 Organic Chemistry I...

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Chemistry 331 Organic Chemistry I Exam 1 Name ________________________________________________________________ (please print)
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CH 331, Exam 1 – Page 1 1. Expand the condensed structures to show the covalent bonds and nonbonding pairs of electrons (5 points). a. ) CH 3 CH 2 NHCH 3 b) ClCH(CH 3 ) 2 c) (CH 3 ) 2 CHCH 2 CHCOOH d) Cl(CH 2 ) 5 CN e) CH 3 CH 2 CH 2 NO 2 2. Draw the Lewis dot structure of propionic acid, CH 3 CH 2 COOH. (5 points) 3. Which of the following molecules would you expect to have a dipole moment of 0? (5 points) a)CH 3 CH 3 b) CHCl 3 c) N(CH 3 ) 3 d) HCOOH e)H 2 C=CH 2 4. Predict the bond angles for the following molecules (5 points). a) C-N-H in (CH 3 ) 2 NH angle: b) C-N-C in (CH 3 ) 2 NH angle: c) C-O-C in CH 3 CH 2 OCH 3 angle: d) H-C-H in H 2 C=O angle: 5. For the following compound: e d c a CH 3 CH 2 CH CH C CH 3 CH 3 C CH What is the hybridization ( sp 3 , sp 2 , sp , etc.) at each of the carbon atoms indicated? (10 points) a) b) c) d) e)
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