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Unformatted text preview: 4. (5pts) On the spectrum below, mark each signal with the letter of the proton set to which it corresponds in trans-2-butenoate. There are blow-ups of the signals on the next page. 5. (3 pts) How would you describe the signals at about 6.94ppm, 5.80 ppm, and 1.83 ppm? 6.94 ppm: ____________________________ 5.8ppm: _________________________ 1.83 ppm: _____________________________ 6. (3pts) Use the values given on the blown-up spectra to calculate the following coupling constants. Show your work. (The values are already given in Hz, so you dont have to convert from ppm to Hz in this problem.) J AB ________Hz J AC ________Hz J BC ________Hz Blown-up signals from trans-2-butenoate...
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