Exam2- B Key

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

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Exam 2 – Form B 1. C 2. A 3. C 4. B 5. C 6. A 7. D 8. C 9. A 10. C 11. A 12. E 13. C 14. D 15. D 16. B 17. E 18. B 19. B 20. A 21. D 22. D 23. a) b) HC N O Si O O O SP = 1 / 2 (18-10) = 4 SP = 1 / 2 (40-32) = 4 c) HCN no S i O 4 4 no d) CN bond order in HCN 3 S i O b o n d o r d e r i n S i O 4 4 1 e) (2 each) How many sigma bonds are in HCN 2 S i O 4 4 4 f) (2 each) How many pi bonds are in HCN 2 S i O 4 4 0 g) (2 each) What is/are the bond angle(s) in HCN 180 o S i O 4 4 109 o h) HCN linear SiO 4 4 tetrahedral i) C in HCN sp S i i n S i O 4 4 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 are the bond angles at carbon #2? A ) 9 0 o B) 109 o C ) 1 2 0 o D) 180 o 2. What is the hybridization at carbon #6? A ) s p B ) s p 2 C) sp 3 D) sp 4 3. What is the shape at carbon #1? 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 nitrogen #7? A ) 9 0 o B) 109 o C ) 1 2 0 o D) 180 o 5. What is the hybridization at carbon #4? A ) s p B ) s p 2 3 D) sp 4 6. What is the shape at carbon #5? 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 #4 and carbon #5?
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Exam2- B Key - Exam 2 Form B 1. C 2. A 3. C 4. B 5. C 6. A...

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