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Directions: As you complete this post-lab, please watch the entire 1H-NMR video posted in the manual. It will be very helpful! 1. Draw in all hydrogen atoms in the chemical structure. Remember that there are always four bonds to carbon. ( 5 pts) 2. How many hydrogen atoms are in the structure? (4 pts) 3. The total number of hydrogen atoms in the chemical structure should equal the total number of protons integrated in the spectrum. What is the total number of protons integrated in the spectrum? Does the total number of hydrogen atoms in the structure match the total number of protons integrated in the spectrum? Show your work. (5 pts) Experiment 1: Green Diels Alder NMR Name: 4. Consider the chemical equivalence (number of different kinds of protons) within the molecule. Label each different type of proton with a lower-case letter. How many signals would be expected to appear in the spectrum? Hint, the mumber of signals that should be in the spectrum may be overlapping in the true spectrum. Diastereotopic protons are not equivalent. (5 pts) 5. What are diastereotopic protons? Which two protons in this molecule are diastereotopic? ( 5 pts) 6. Use the 1H NMR Chemical Shift Table to predict the ppm range expected for each chemically equivalent proton listed in Problem 4. (7 pts) Experiment 1: Green Diels Alder NMR Name: Date: 7. Predict the splitting pattern of each proton signal. Splitting patterns are predicted by identifying the number of equivalent neighboring protons (singlet, doublet, triplet, quartet, multiplet...) (7 pts) 8. Discuss how the ' H NMR spectrum can be used to help prove the identity of the product. Consider the structural features (chemical shifts and presence or absence of signals) and the number of protons (integration) in the product compared to the starting material. (12 pts)