chem_118b_quiz_2_key

chem_118b_quiz_2_key - CHEM118B QUIZ 2 (MONDAY LABS O8/17)...

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CHEM118B QUIZ 2 (MONDAY LABS –O8/17) 1) Circle the compound with the higher boiling point and give reasoning for your answer. OH OH (10pts) -Straight-chained alcohol has greater surface area for Van der Waals forces (10pts) 2) What is sublimation, what was it used for in last week’s experiment, and why is it important to keep the inner beaker cold? -Transition from solid to vapor phase with no intermediate (10pts) -Used as purification method (5pts) -Vapor condenses and crystals collect on cooled surface (5pts) 3) Draw an example of an alcohol that will fail the Chromic Acid Test and explain. OH (10pts) -Tertiary alcohol cannot be oxidized (10pts) 4) The Baeyer Test for unsaturation employs potassium permanganate (KMnO 4 ) in a useful redox process. State what the important byproduct of this reaction is and describe what a positive Baeyer Test would look like. -Byproduct is MnO 2 (10pts) -Manganese dioxide appears as brown precipitate at bottom of solution (10pts) 5) Draw the oxidized product in the following reaction. (10pts for diol & 10pts for syn addition) KMnO 4 OH OH or enantiomer
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This note was uploaded on 02/03/2010 for the course CHE Organic Ch taught by Professor Nasiri during the Spring '10 term at UC Davis.

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chem_118b_quiz_2_key - CHEM118B QUIZ 2 (MONDAY LABS O8/17)...

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