Quiz 4.pdf - CHEM 135 Quiz No 4 Oct 14 2016 KEY Name 20...

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1 CHEM 135 KEY Quiz No. 4 _________________________________________ Oct. 14, 2016 Name 20 points total 1. (2) Write structural formulas for the major organic product(s) for the following reaction. Be sure to show the stereochemistry. + O O H H CHO CHO H H 2. (2) Consider the π molecular orbitals for 1,3,5-hexatriene. (a) How many bonding π MOs does the triene have? 3 (b) How many nodes between the nuclei are there in the HOMO of the ground state? 2 3. (4) Draw three important contributing resonance structures for the following ion. Show all electrons including non-bonding and bonding pairs and indicate formal charges. Indicate which resonance structure would contribute the most and which would contribute the least to the resonance hybrid. C H H H C F O H C H H H C F O H C H H H C F O H least most 4. (3) Arrange the following in order of increasing acidity OH OH NH 3 OH CH 3 O (a) (b) (c) (d) c d a b _______________ _______________ ________________ ______________ least acidic most acidic
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  • Fall '17
  • Finzel
  • Lewis Structure, Molecule, Delocalized electron, Conjugated system

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