MidtermExam2009

MidtermExam2009 - Midterm Exam S343 Summer 2009 Name:_ 1....

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Midterm Exam S343 Summer 2009 Name:__________________________________________ 1. _____/6 2. _____/4 3. _____/5 4. _____/5 5. _____/5 6. _____/5 7. _____/8 8. _____/3 9. _____/3 10. _____/3 11. _____/6 12. _____/6 13. _____/6 14. _____/5 15. _____/3 16. _____/5 17. _____/5 18. _____/10 19. _____/10
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Questions 1-7 refer to this information: A student performed a reaction in organic laboratory that was designed to make about 2 grams of Product A. The reaction is also known to produce small quantities of Products B and C. Cl Cl Product A boiling point: 173 o C melting point: 52 o C Cl Product B boiling point: 173 o C melting point: -25 o C Cl Product C boiling point: 178 o C melting point: -18 o C Cl Cl 1. (6pts) Upon isolating the solid unpurified product, the student took a melting point, which was 41-49 o C. What does this data suggest about the purity of Product A? Explain the physical basis of depressed, broad melting points. 2.
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MidtermExam2009 - Midterm Exam S343 Summer 2009 Name:_ 1....

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