Practice Midterm Exam with Questions - Organic Chemistry II | CHEM 30B, Exams of Organic Chemistry

Download Practice Midterm Exam with Questions - Organic Chemistry II | CHEM 30B and more Exams Organic Chemistry in PDF only on Docsity! Practice Midterm, Chem 30B Winter 2009, Dr. Arif Karim 1. For each of the following structures, indicate how many unique signals you would expect to see in the 1H and 13C NMR spectra. O O O 1H: 13C: 1H: 13C: 1H: 13C: Br O Br O 1H: 13C: 1H: 13C: 2. How would one differentiate between the following pairs of compounds by IR spectroscopy? Be specific about peak locations. a. Ester vs. Ketone b. Carboxylic Acid vs. Alcohol c. Ketone vs. Amide 3. For each pair of atoms of groups of atoms marked in bold, state whether they are homotopic, enantiotopic, or diastereotopic. Also indicate the total number of unique 1H signals you expect to see in the NMR spectrum. H H H3C CH3 Br H H 5b) C4H8O Peak Integration: 3.68: 3H 2.29: 2H 1.14: 3H 5c) C5H8O Peak Integration: 6.30: 1H 6.21: 1H 5.91: 1H 2.98: 2H 1.11: 3H 5d) C8H16O Peak Integration: 3.82 4H 0.97 12H 6. Draw the 1H NMR spectra for the following molecules: 6a) O H O 6b) O