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Final

Sample FinalKey.pdf

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Department
Chemistry
Course
CHEM261
Professor
Christopher Cairo
Semester
Winter

Description
Chemistry 261Sample Final Key Chemistry 261Sample Final Key NoteThe questions on this sample final are intended to give you additional practice for the exam that you will writeIf a question regarding a particular topic eg IR spectroscopy does not appear on this exam you should not infer that questions on this topic wont be on the final given this semesterAs outlined on the syllabus you are responsible for all of the material covered in classIn particular all the mechanisms and reactions covered are fair game 1 Chemistry 261Sample Final Key1Name the followingDesignate as RS or EZ where appropriate 2 points each for a total of 10trans12dimethylcyclobutaneCHHC33CH3R3allyl3methyl1cycloheptene2Z5E4ethyl5methyl25octadieneClFR3chloro3fluoro1heptyne44dimethylheptaneHCCH33 2 Draw both chair forms of the following cyclohexaneCalculate the energy difference between the chair formsIf one chair is more stable than the other circle the most stable one 5 points HCCHCHCHCH3CHCH323232HC3HCCHCH3CH3331 CHCH 1155155 kJmolMore Stable332 CHH 23876 kJmol2 CHCHH 24692 kJmol332Total E 231 kJmolTotal E 92 kJmolEnergy Difference139 kJmol2
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