Using the nmr and IR spectrum attached, answer the following questions: 1. Are y
ID: 482161 • Letter: U
Question
Using the nmr and IR spectrum attached, answer the following questions: 1. Are you confident that you made styrene? What evidence appears in the IR and NMR spectra that convinces you that you made the product? 2. Are you confident that your styrene is clean? What is or is not present in your spectra that supports your answer? If you believe other species are present, what do you think they are?100 96T 80 60 2500 4000 3500 3000 c: Program Files (x86)vLabsolutionsvIRvDatavdefault Ispd 175 1500 1250 6 SHIMADZU default 36 1000 750 cm-1
Explanation / Answer
a. It is clear that styrene is not formed. The peaks for alkene is missing in NMR. further, there are additional peaks in NMR above 8 and 9 which suggest that there are other impurities present in it.
b. No, styrene is not formed at all. Since, there is a peak at around 9 ppm, the impurity is an aldehyde. Seeing the area of peak with comparison with the integration for 5 aromatic protons, It may be benzaldehyde.
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