Sas-exam1practice - CHEM 239B Spring, 2006 Prof. Sasaki...

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CHEM 239B Spring, 2006 EXAM #1 Name . Prof. Sasaki 150 points TOTAL Good Luck! Note: Only answers in the box will be graded. _______________________________________________________________________ 1. (35) (a) Rank each of the following groups of organic compounds in order of decreasing acidity. (i) BrCH 2 COOH, ClCH 2 COOH, FCH 2 COOH ( A ) ( B ) ( C ) more acidic less acidic (ii) CH 2 CH 2 COOH CH CH 2 COOH OH CH 2 CH COOH OH ( A ) ( B ) ( C ) more acidic less acidic (b) Peroxyacetic acid (CH 3 -(C=O)OOH) is a weaker acid than acetic acid; its pKa is 8.2 versus 4.7 for acetic acid. Briefly explain why are peroxy acids are weaker than the corresponding carboxylic acids. (c) When compound A is heated, two isomeric products are formed. What are these two products? COOH COOH heat H 3 CO +
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CHEM 239B page 2 Name . 2. (40) (a) Propose a synthesis of triphenylmethanol ((C
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This test prep was uploaded on 04/15/2008 for the course CHEM 239 taught by Professor Sasaki during the Spring '06 term at University of Washington.

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Sas-exam1practice - CHEM 239B Spring, 2006 Prof. Sasaki...

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