Question

4. The following is the GC spectrum of a student's cyclohexene sample from Experiment 9. Refer to the lab manual for more information concerning the preparation of the GC sample. Three peaks corresponding to diethyl ether (2.668 min), cyclohexene (2.928 min) and cyclohexanol (3.763 min) are shown in the spectrum. Their peak areas are listed in the table below. (a) If the reported yield of the reaction is 3 g, estimate the actual yield of the cyclohexene. Ignore the difference in GC response factors. (b) Explain what you could do to improve the preparation so the contaminant from cyclohexanol can be minimized. $ TIT Peak Time Area Height Area Norm. Area Area/Height # (min) (V.) [%] [%] [s) 1 2.668 14534.35 9215.84 68.22 68.22 1.5771 2 2.928 6140.96 3698.20 28.82 28.82 1.6605 3 3.763 631.22 285.86 2.96 2.96 2.2081 21306.52 13199.90 100.00 100.00