Exam 1 Solution Key

Exam 1 Solution Key - Chem 10172, Spring 2008 EXAM 1 KEY...

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Chem 10172, Spring 2008 EXAM 1 KEY February 7, 2008 1 (1) (a) (3 pts.) Use proper curved-arrow formalism to show how to generate a new resonance structure of the species shown below, then draw the resonance structure to the right. N O N O (b) (3 pts.) Use proper curved-arrow formalism to show how to generate a second new resonance structure of this species, then draw the resonance structure to the right. N O N O (c) (4 pts.) Which of the three resonance structures contributes most to the overall structure of this species? Briefly explain your reasoning. The structure with the negative charge on oxygen contributes the most, since oxygen is more electronegative than nitrogen or carbon and so is better able to support the negative charge.
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EXAM 1 KEY February 7, 2008 2 (2) (a) (3 pts.) The allyl cation is shown below. Give the hybridizations of each of the carbon atoms in allyl cation (in the boxes provided). sp 2 sp 2 sp 2 (b) (6 pts.) Draw a complete Lewis structure of the allyl cation, including all atoms, bonds, lone pairs, and formal charges, as well as any significant resonance structures of the allyl cation. C
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This homework help was uploaded on 04/17/2008 for the course CHEM 10172 taught by Professor Brown during the Spring '08 term at Notre Dame.

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Exam 1 Solution Key - Chem 10172, Spring 2008 EXAM 1 KEY...

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