Exam2- A Key

Exam2- A Key - Exam 2 Form A 1. D 2. C 3. E 4. C 5. B 6. B...

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Exam 2 – Form A 1. D 2. C 3. E 4. C 5. B 6. B 7. D 8. C 9. A 10. A 11. D 12. D 13. D 14. A 15. C 16. E 17. D 18. A 19. E 20. B 21. E 22. B 23. a) b) HS H OS e O O SP = 1 / 2 (12-8) = 2 SP = 1 / 2 (32-26) = 3 c) H 2 S no S e O 3 2 no d) HS bond order in H 2 S 1 S e O b o n d o r d e r i n S e O 3 2 1 e) (2 each) How many sigma bonds are in H 2 S 2 S e O 3 2 3 f) (2 each) How many pi bonds are in H 2 S 0 S e O 3 2 0 g) (2 each) What is/are the bond angle(s) in H 2 S 109 o S e O 3 2 109 o h) H 2 S bent SeO 3 2 trigonal pyramidal i) S in H 2 S sp 3 S e i n S e O 3 2 sp 3
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For the first nine questions, consider this molecule. (Note: All atoms obey the octet rule. Lone pairs have not been shown, but must be considered when answering these questions.) C C C C C C C O H C H C H C N H C H H O H H H H H 1 2 3 4 5 6 7 8 9 1. What is the bond angle at carbon #5? A ) 9 0 o B) 109 o C ) 1 2 0 o D) 180 o 2. What is the hybridization at nitrogen #7? A ) s p B ) s p 2 C) sp 3 D) sp 4 3. What is the shape at carbon #4? A ) l i n e a r B ) b e n t C ) t r i g o n a l p l a n a r D ) t r i g o n a l pyramidal E) tetrahedral 4. What are the bond angles at carbon #1? A ) 9 0 o B) 109 o C ) 1 2 0 o D) 180 o 5. What is the hybridization at carbon #3? A ) s p B ) s p 2 3 D) sp 4 6. What is the shape at oxygen #9? A ) l i n e a r B ) b e n t C ) t r i g o n a l p l a n a r D ) t r i g o n a l pyramidal E) tetrahedral 7. How many pi bonds exist in this molecule? A ) 3 B ) 4 C ) 5 D ) 6 E ) 7 8. What is the bond order of the bond between carbon #2 and carbon #3? A ) 1 B ) 1 . 3 3 C ) 1 . 5 D ) 2 E ) 3 9. What is the bond order of the bond between carbon #6 and nitrogen #7?
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This note was uploaded on 03/19/2012 for the course CH 101 taught by Professor Bigham during the Spring '08 term at N.C. State.

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Exam2- A Key - Exam 2 Form A 1. D 2. C 3. E 4. C 5. B 6. B...

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