14C_f09_finalA

14C_f09_finalA - Chemistry 14C Fall 2009 Final Exam Part A...

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Chemistry 14C Fall 2009 Final Exam Part A Page 1 Page 1 score = Winter gasoline formulation of gasoline differs from summer formulation by an increase the concentration of oxygenates. Oxygenates are small, oxygen-containing organic molecules that reduce carbon monoxide emissions. Some common oxygenates are shown in below. Seasonal reformulation is one reason for gas price fluctuations. Common Gasoline Oxygenates CH 3 OH CH 3 CH 2 OH OH OCH 3 O OCH 2 CH 3 OCH 3 Methanol bp 64.7 o C Ethanol bp 78.4 o C TBA bp 82.4 o C MTBE bp 55.2 o C DIPE bp 69 o C ETBE bp 72 o C TAME bp 86 o C 1. (4) Circle the oxygenate in which the intermolecular attractive forces are greatest: Methanol Ethanol TBA MTBE DIPE ETBE TAME Finish this sentence in ten words or less : I can tell that this oxygenate has the greatest intermolecular attractive forces because. .. 2. (2) List all of the intermolecular attractive forces that influence the molecule you circled in question 1. 3. (2) Name one noncovalent force that is stronger than any force listed in question 2. 4. (4) Finish this sentence in fifteen words or less : A significant and specific reason that the boiling point of ethanol is higher than the boiling point of methanol is because. .. 5.
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14C_f09_finalA - Chemistry 14C Fall 2009 Final Exam Part A...

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