100 MS-NW-0080 80 T 60 40 T 40 T 20 Mass spectrum of acetic acid 10 15 20 25 30 1H 35 40 45 S Carbon spectrum of acetic acid 50 55 60 65 70 75 200 180 160 140 120 100 80 60 40 40 IR spectrum of acetic acid Proton spectrum of acetic acid 12 10 00 8 の 4 3H 2 -N - ° -2 لام વ્રુ 20 0 4000 3000 2000 1500 1000 500 HAVENIIMA FRI-II 100 MS-NW-0039 80 60 60 40 40 T 20 20 Mass spectrum of isoamyl acetate 0 25 50 24 75 100 Proton spectrum of isoamyl acetate 3H 1.7 PPH 1H 2H BH M.I. 125 3.5 3.0 2.5 1.5 1.0 0.5 PPM 86 D 5D S Carbon spectrum of isoamyl acetate t t d q q T 200 180 160 140 120 100 80 60 40 20 0 IR spectrum of isoamyl acetate D 4000 3000 2000 1500 1000 500 87
1) The isoamyl acetate report requires eight paragraphs - four for comparison of isoamyl alcohol and isoamyl acetate (one paragraph each devoted to MS, HNMR, CNMR and IR) and four for comparison of acetic acid and isoamyl acetate ((one paragraph each devoted to MS, HNMR, CNMR and IR.
2) For MS, the differing masses of molecular ions are a popular starting point. Including a unique fragmentation is important, too.
3) For HNMR, CNMR and IR state the peaks that are different and what makes them different (usually the presence or absence of certain groups). See if you can find two differences (in each set of IR, HNMR and CNMR spectra) due to the presence or absence of a functional group. Include peak locations. Alternatively, you can state a shift of a peak due to a change near a given functional group. Including peak locations for shifted peaks, as well as what these peaks are due to. Ideally, your focus should be on not just identifying the differences but explaining them in terms of functional group changes.
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