2.) This unknown has a chemical formula C4H8O2. The IR spectrum shows moderate peaks from 2955 - 2986 cm^-1 and a strong peak at 1743 cm^-1. Use the ^1H NMR below to determine the structure of the unknown. HDI:
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This could be due to a double bond, a ring, or a carbonyl group. Second, the IR spectrum shows a strong peak at 1743 cm-1, which is characteristic of a carbonyl group (C=O). This accounts for one degree of unsaturation. The moderate peaks from 2955 - 2986 cm-1 Show more…
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