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CH223 001 HW 16

CH223 001 HW 16 - K hyr(the equilibrium constant for...

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CH223 001 HW 16 (Daily) SHAW ROBERT H CH 223, section 001, Fall 2008 Instructor: Kay Sandberg Web Assign Current Score: 9 out of 9 Due: Wednesday, October 1, 2008 07:00 AM EDT Description This assignment corresponds mainly to Lecture 16 and the DE presentation(s) which accompany it. Instructions Be aware that for some of the multiple choice questions you only get 2 submissions - choose wisely! The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. 2.5/2.5 points Rank the following compounds in order of increasing rate of hydration (1 = slowest, 5 = fastest). 3-hexanone 1 1 2,2-difluorobutanal 5 5 2,2-dichlorobutanal 4 4 4-chloro-2-pentanone 2 2 3-chlorobutanal 3 3 Solution or Explanation The carbonyl C with the most electronegative atoms bonded close by will be the most reactive and have the fastest hydration rate. The carbonyl C with the most electron "pumps" will be the least reactive (thus the most stable). 2. 4.5/4.5 points (a) Rank the following compounds in order of increasing
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Unformatted text preview: K hyr (the equilibrium constant for hydration) by placing the corresponding letter in the blank beside the K hyr description. CH223 001 HW 16 http://www.webassign.net/[email protected]/student.pl?g=2008120717. .. 1 of 3 12/7/2008 12:50 PM A A smallest K hyr B B next smallest D D next largest C C largest K hyr (b) Draw the skeletal structure of the hydrate of B. CC(O)(O)c1ccccc1 Solution or Explanation The carbonyl C with the most and closest electronegative atoms will be the most reactive and have the fastest hydration rate which results in a larger K hyd . The hydrate is a geminal diol. 3. 2/2 points LQ #1 CH223 001 HW 16 http://www.webassign.net/[email protected]/student.pl?g=2008120717. .. 2 of 3 12/7/2008 12:50 PM O=C2c1ccccc1C(=O)C2(O)O LQ #2B CC(O)O CH223 001 HW 16 http://www.webassign.net/[email protected]/student.pl?g=2008120717. .. 3 of 3 12/7/2008 12:50 PM...
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CH223 001 HW 16 - K hyr(the equilibrium constant for...

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