Please answer question 2 for A, B, and C. IR Problems 1. How could you use IR sp

Question

Please answer question 2 for A, B, and C.

IR Problems 1. How could you use IR spectroscopy to distinguish between the following pairs of isomers: a) CH3CH2OH and CH3OCH3 c) CH3CH2CO2H and HOCH2CH2CHO (an aldehyde) b) cyclohexane and 1-hexene 2. What functional groups might the following molecules contain? a) A compound with a strong absorption at 1710 cm b) A compound with a strong absorption at 1540 cm c) A compound with strong absorptions at 1720 cm1 and 2500-3100 cm 3. Acetone (CH3COCH3) and 2-propen-1-ol (H2C-CHCH2OH) are isomers. How could you distinguish them by IR spectroscopy? 4. Propose structures for compounds that meet the following descriptions: a) CsHe, with IR absorptions at 3300 and 2150 cm b) C4H8O, with a strong IR absorption at 3400 cm

Explanation / Answer

2.

a). A compound contains a strong absorption at 1710 cm-1 corresponding to ketone function.

B). compound contains a strong absorption at 1540 cm-1 corresponding to olefin (alkene) functionality.

C). compound contains a strong absorption at 1720 cm-1 corresponding to aldehyde functionality and 2500-3100 cm-1 corresponding to alkane C-H stretching.

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