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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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
Transcribed Image Text:A molecule with the molecular formula of C7H8O produces the
IR spectrum shown below. Draw a structure that best fits this
data.
4000
D
3000
TO
2000
1500
Wavenumbers (cm'¹)
1000
500
Expert Solution
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- Select a single sp3–sp3 or sp3–sp2 bond from a linear portion of the molecule, identify it, and draw a Newman projection for it. Then draw a Newman projection for a 60 degree rotational isomer. List each rotational isomer as lower or higher energy. If your molecule is cyclic and has no linear portions, then draw the expected conformation of the cyclic portion of the molecule.arrow_forward7. Consider the C=O stretching data for the following cyclic ketones: cyclopropane 1813 cm³¹; cyclobutanone 1791 cm³¹; cyclopentanone 1740 cm³¹. (a) which ketone has the strongest bond? (b) where in the trend would you expect the C=O stretch of cyclopropenone? (Use the hybridization information in the same way we used hybridization for C-H stretching.)arrow_forwardWhich of the following conjugated systems would have the smallest HOMO-LUMO gap (i.e. largest λ-max of absorbance)? a) 1 b) 2 c) 3 d) 4arrow_forward
- A molecule produces two molecular ions with a m/z of 152 and 154 and a base peak with a m/z of 73. The IR and ¹H NMR spectra are shown below. Draw the structure that best fits this data. 4000 1H 11 10 3000 9 8 2000 7 1500 Wavenumbers (cm) + 6 5 2H 1000 2H 2 1 500 ppm of Q Qarrow_forwardAssign the correct constitutional isomer to this spectrum (C5H12O)arrow_forwardWhich of the following molecules would be expected to have absorbance in the IR range from a symmetric stretching vibration? SO2 CS2 CF4 CO2 CH4arrow_forward
- 48arrow_forwardThe absorption pattern in the UV/VIS region corresponds to (a) bond vibrations b) valance electron transitions =) molecular rotations E) nuclear spin 0000 a an IR spectrumarrow_forward22. Which of the following compounds gives an infrared Spectrum with peaks at 3300cm (sharp Peak) and 2150 cm (sharp Peak) ? H LH ₂ CH ₂ C = CH CH3C=CCH 3 2 1 HCCH H₂C A) I B)2 c) 3 04 CAZ H 9 CH₂arrow_forward
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