Carbon monoxide is produced by incomplete combustion of fossil fuels. (a) Give the electron configuration for the valence molecular orbitals of CO. The orbitals have the same energy order as those of the N 2 molecule. (b) Do you expect CO to be paramagnetic or diamagnetic? (c) What is the bond order of CO? Does this match the bond order predicted by the electron-dot structure? (d) CO can react with OH − to form the formate ion, HCO 2 − Draw an electron-dot structure for the formate ion, and give any resonance structures if appropriate.
Carbon monoxide is produced by incomplete combustion of fossil fuels. (a) Give the electron configuration for the valence molecular orbitals of CO. The orbitals have the same energy order as those of the N 2 molecule. (b) Do you expect CO to be paramagnetic or diamagnetic? (c) What is the bond order of CO? Does this match the bond order predicted by the electron-dot structure? (d) CO can react with OH − to form the formate ion, HCO 2 − Draw an electron-dot structure for the formate ion, and give any resonance structures if appropriate.
Solution Summary: The author explains that the electronic configuration for the valence molecular orbitals of CO needs to be determined.
Carbon monoxide is produced by incomplete combustion of fossil fuels. (a) Give the electron configuration for the valence molecular orbitals of CO. The orbitals have the same energy order as those of the
N
2
molecule. (b) Do you expect CO to be paramagnetic or diamagnetic? (c) What is the bond order of CO? Does this match the bond order predicted by the electron-dot structure? (d) CO can react with
OH
−
to form the formate ion,
HCO
2
−
Draw an electron-dot structure for the formate ion, and give any resonance structures if appropriate.
Transmitance
3. Which one of the following compounds corresponds to
this IR spectrum?
Point out the absorption band(s) that helped you
decide.
OH
H3C
OH
H₂C
CH3
H3C
CH3
H3C
INFRARED SPECTRUM
0.8-
0.6
0.4-
0.2
3000
2000
1000
Wavenumber (cm-1)
4. Consider this compound:
H3C
On the structure above, label the different types of H's
as A, B, C, etc.
In table form, list the labeled signals, and for each
one state the number of hydrogens, their shifts, and the
splitting you would observe for these hydrogens in the ¹H
NMR spectrum.
Label
# of hydrogens
splitting
Shift (2)
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