Practice Exam 1 - CHM 1250 EXAM 1 Name_Access ID Circle...

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Page 1 of 7 CHM 1250 EXAM 1 Name:_______________________________________Access ID_____________________ Circle Section # : 02 03 04 06 07 08 09 10 11 12 14 15 16 17 Part I: Recrystallization (18 points) 1. List four desirable properties for a good recrystallization solvent. a. b. c. d. 2. At what point do you add charcoal during recrystallization? 3. Draw the set-up for suction filtration and label each component. 4. Describe HOWyou determined the identity of your unknown after recrystallization.
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1. Calculate the wave number for the stretching vibration of a triple bond between carbon and nitrogen. (assume that you have all carbon-12 and all nitrogen-14).
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