Chapter 13: Spectroscopy
IR spectroscopy - correct answer-used to determine if specific functional group are present
UV-Vis spectroscopy - correct answer-Indicates presence of conjugated pi system
NMR spectroscopy - correct answer-The specific arrangement of all carbon and hydrogen
atoms in the compound
3 characteristics of IR spectrum - correct answer-1) Wavenumber
2) Intensity (strong or weak)
3) Shape (broad or narrow)
Which would have the highest wavelength? The weaker or stronger bond? - correct
answer-Stronger bond
Correlation between atom size and wavenumber - correct answer-the small the atom the
higher the wave number
Range wavenumber single bonds - correct answer-400-1600
Range wavenumber double bonds - correct answer-1600-1850
Range wavenumber triple bonds - correct answer-2100-2300
Range wavenumber X--H - correct answer-2500-4000
Types of C-H bonds from highest to lowest wavenumber - correct answer-Highest
Sp
Sp2
Sp3
Lowest
Sp3 wavenumber (carbon with single bonds)
-C-H - correct answer-Peak to the right of 3000cm
Sp2 wavenumber (carbon with double bond)
=C-H - correct answer-Peak to the left of 3000cm
Sp wavenumber (carbon with triple bond)
triple bond-C-H - correct answer-Peak farther left of 3000cm
like 3300
Resonance structures wavenumber - correct answer-
O-H signals - correct answer-Range 3200-3600
IR spectroscopy - correct answer-used to determine if specific functional group are present
UV-Vis spectroscopy - correct answer-Indicates presence of conjugated pi system
NMR spectroscopy - correct answer-The specific arrangement of all carbon and hydrogen
atoms in the compound
3 characteristics of IR spectrum - correct answer-1) Wavenumber
2) Intensity (strong or weak)
3) Shape (broad or narrow)
Which would have the highest wavelength? The weaker or stronger bond? - correct
answer-Stronger bond
Correlation between atom size and wavenumber - correct answer-the small the atom the
higher the wave number
Range wavenumber single bonds - correct answer-400-1600
Range wavenumber double bonds - correct answer-1600-1850
Range wavenumber triple bonds - correct answer-2100-2300
Range wavenumber X--H - correct answer-2500-4000
Types of C-H bonds from highest to lowest wavenumber - correct answer-Highest
Sp
Sp2
Sp3
Lowest
Sp3 wavenumber (carbon with single bonds)
-C-H - correct answer-Peak to the right of 3000cm
Sp2 wavenumber (carbon with double bond)
=C-H - correct answer-Peak to the left of 3000cm
Sp wavenumber (carbon with triple bond)
triple bond-C-H - correct answer-Peak farther left of 3000cm
like 3300
Resonance structures wavenumber - correct answer-
O-H signals - correct answer-Range 3200-3600
