Using the infrared spectrum below and any IR correlation table, answer the follo
ID: 990591 • Letter: U
Question
Using the infrared spectrum below and any IR correlation table, answer the following questions
a. What is a wavenumber and why is it given in 1/cm (cm-1 )?
b. Describe how the IR spectrum indicates the compound has no hydroxy group.
c. Describe how the IR spectrum indicates the compound has no triple bonds.
d. Describe how the IR spectrum indicates the compound has bonds.
e. Describe how the IR spectrum indicates that the compound has an aromatic ring.
f. Describe how the IR spectrum indicates the compound has saturated C-H bonds.
g. Describe how the IR spectrum indicates the compound has a carbonyl group (C=O).
h. Describe how the IR spectrum indicates the compound may have a C-O bond.
i. Given the chemical formula of C8H8O2, give two possible structures for this spectra?
80 n 60- t 40 C 20 3500 3000 2500 2000 1500 1000 WavenumbersExplanation / Answer
a) The wave number is considered as the amount of times a wave vibrates in a determined distance
b) If the compound has an hidroxy group, it should be placed around the 3000 and it should show a bigger and wider wave in that region
c)If the coumpound had a triple bond, the spectrum should show activity around 2100 and 2260. That area has no activity shown.
d) The activity on lower wave numbers show different interactions and bonds. For example, the peak around 1300 shows that there are single bonds, in the form of alkanes.
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