Vollhardt,Chapter6

Vollhardt,Chapter6 - Chapter 6: 1. Why does the bond...

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Chapter 6: 1. Why does the bond strength of a carbon - halogen bond decrease as the size of the halogen increases? a. Because the length of the C - X bond becomes progressively shorter as the halogen size increases. b. The polarity of the C - X bond becomes more negative towards the C end as the halogen size increases. c. The size of the p orbital of the halogen is progressively more mismatched against the sp3 orbital of the carbon. d. Because the increasing halogen size dwarfs the bond length of the carbon. Answer: C 2. What occurs in a nucelophilic substitution? a. A carbon atom receives a lone pair of electrons as bond cleavage occurs in the haloalkane. b. A nucleophile is replaced by the halide of a haloalkane. c. An electrophile reacts with the halide of a haloalkane. d. A nucleophile replaces the halide of a haloalkane. Answer: D 3. In all cases of using “electron pushing” arrows in reaction mechanisms, what do the arrows denote? a.
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This note was uploaded on 02/17/2010 for the course CHEM 3A taught by Professor Frechet during the Spring '10 term at UC Davis.

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Vollhardt,Chapter6 - Chapter 6: 1. Why does the bond...

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