143B Exam 2 Key

143B Exam 2 Key - Chemistry 143B Winter, 2010 NAME: KEY,...

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Chemistry 143B Winter, 2010 Exam #2 (2-23-10) Total Points: 100 NAME: KEY, Ima USE INK FOR RECORDING ANSWERS (if using pencil, no re-grades will be allowed) 1. (18 points) For the following reaction, indicate how each change in reaction conditions would effect the rate of product formation (relative to the initial conditions given). An example is provided. A B C α -chloro-2,6-dimethylacetanilide + diethylamine + acetonitrile α -(N,N-diethylamino)- 2,6-dimethylacetanilide 1 mmol 1 mmol 100 mL 80 o C add "A" to "B" dissolved in "C" Changed Conditions Rate: Increase/Decrease/ Stay the Same By what amount? (2x, 6x, etc. or write "can't quantify") Example: Change temperature to 20 o C INCREASE 2x 1 pt each 2 pts each Change A to 2 mmol INCREASE 2x Change C to 50 mL INCREASE 4x Change A to 2 mmol and B to 3 mmol INCREASE 6x Change B to 0.5 mmol
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This note was uploaded on 03/04/2012 for the course CHEM 143b taught by Professor Staff during the Spring '08 term at UCSD.

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143B Exam 2 Key - Chemistry 143B Winter, 2010 NAME: KEY,...

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