CHEM231Q3_sample - acetate ion iminium ion diazomethane 4...

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page 3 —— pts Chemistry 231 Sample Quiz Professor: Dr. Gergens 1. a. Draw Lewis structures, showing all valence electrons, for these substances. b. Compute correct formal charges over all charged atoms. c. Draw resonance structures where appropriate. SOCl 2 thionyl chloride H 2 SO 3 sulfurous acid 2. Correclty draw in the dipole for F—C bond indicating partial positive and negative charges. 3. Calculate formal charges about the atoms in these structures: H C N H H H N H C H N C H H H C O O C H H C O H enolate ion •• •• •• •• ••
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Unformatted text preview: acetate ion iminium ion diazomethane 4. Draw any resonance forms observed in the above structures in question 3. 5. Draw in the correct arrow pushes from going from (a) to (b) to (c) to (d) for these resoance structures. CH 3 H Br H-O CH 3 H Br CH 3 H Br CH 3 H Br H-O H-O H-O ⊕ ⊕ ⊕ ⊕ (a) (b) (d) (c) 6. Between the valid structures in question 5, which structure is the major contributor and why?...
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