The labels of four different liquids on a shelf fell off The four liquids were i

Question

The labels of four different liquids on a shelf fell off The four liquids were isomers with ihp molecular formula C5H10O. The labels indicated that their structures were the four below In order to determine which label should be put on which bottle, the infrared spectra of the four compounds were run. All of the infrared spectra have a strong absorption in the 2900-3000 cm^-1 region. Why? What common structural feature in these molecules gives rise to absorption in this area? Furthermore, the liquids that were taken from each of the four bottles have additional strong peaks. They are listed below for each bottle Based on the peaks indicated for each bottle, match the appropriate compound above (A. B, C. or D) with the correct bottle. Bottle 1: 3500 cm^-1 Bottle 2: 1650 and 3100 cm^-1 Bottle 3: 1650. 3100 and 3500 cm^-1 Bottle 4: 1710cm^1

Explanation / Answer

Answer:

1) All of them have strong absorption in 2900-3000 cm-1 due to presence of alkyl groups.

2)

a).3500 cm-1 = Hydroxy group (-O-H)

b).1650 cm-1 and 3100 cm-1= Alkene and Alkenyl groups

c).1650 cm-1,3100 cm-1 and 3500 cm-1 = Alkene (C=C), Alkenyl groups(C=C-) and Hydroxy group (-O-H)

d).1710 cm-1 = Carbonyl group (C=O)

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.